1 00:00:01,546 --> 00:00:03,617 WILLIAM SHATNER: The ability to survive freezing temperatures 2 00:00:03,617 --> 00:00:03,651 WILLIAM SHATNER: The ability to survive freezing temperatures through sheer force of will. 3 00:00:03,651 --> 00:00:06,155 through sheer force of will. 4 00:00:06,355 --> 00:00:08,226 Ancient traditions 5 00:00:08,392 --> 00:00:10,965 that protect the body from pain. 6 00:00:11,131 --> 00:00:13,269 And extraordinary adventurers 7 00:00:13,369 --> 00:00:16,843 who risk their lives to defy the limits. 8 00:00:18,780 --> 00:00:22,354 How are certain individuals able to perform 9 00:00:22,420 --> 00:00:27,464 incredible physical feats of strength, speed, or stamina 10 00:00:27,565 --> 00:00:30,370 that most of us could never dream of doing? 11 00:00:30,403 --> 00:00:34,580 Is it simply a combination of natural talent and training? 12 00:00:34,646 --> 00:00:38,286 Or do some people tap into mysterious forces 13 00:00:38,419 --> 00:00:40,825 when they achieve things that seem almost 14 00:00:40,858 --> 00:00:42,527 superhuman? 15 00:00:43,563 --> 00:00:46,469 Well, that is what we'll try and find out. 16 00:00:46,502 --> 00:00:48,539 ♪ ♪ 17 00:01:01,766 --> 00:01:04,238 SHATNER: Central Iceland. 18 00:01:04,371 --> 00:01:07,210 Here, not far from a massive glacier 19 00:01:07,243 --> 00:01:10,250 where temperatures average just above freezing, 20 00:01:10,350 --> 00:01:14,058 a man has decided to sit outside in the cold 21 00:01:14,257 --> 00:01:15,761 for over an hour, 22 00:01:15,761 --> 00:01:15,794 for over an hour, wearing only a pair of shorts. 23 00:01:15,794 --> 00:01:18,299 wearing only a pair of shorts. 24 00:01:19,736 --> 00:01:22,040 His name is Wim Hof. 25 00:01:22,173 --> 00:01:23,944 And although most people would die 26 00:01:24,177 --> 00:01:28,654 if they attempted such a feat, he finds it quite relaxing. 27 00:01:28,754 --> 00:01:31,225 Wim has made a great impression on the world 28 00:01:31,358 --> 00:01:33,096 because of his extraordinary ability 29 00:01:33,229 --> 00:01:35,968 to withstand freezing temperatures. 30 00:01:36,235 --> 00:01:40,476 His exploits have earned him the nickname "The Iceman." 31 00:01:41,680 --> 00:01:42,882 WIM HOF: The most challenging 32 00:01:42,882 --> 00:01:42,915 WIM HOF: The most challenging aspect of going into the cold 33 00:01:42,915 --> 00:01:46,923 aspect of going into the cold 34 00:01:46,923 --> 00:01:49,294 is your fear. 35 00:01:50,631 --> 00:01:52,267 Control your fear 36 00:01:52,333 --> 00:01:55,540 and let the body do what the body is capable of. 37 00:01:55,641 --> 00:01:58,780 All the doctors said, "You are the Iceman. 38 00:01:58,780 --> 00:01:58,814 All the doctors said, "You are the Iceman. "You are a freak of nature. 39 00:01:58,814 --> 00:02:00,684 "You are a freak of nature. 40 00:02:00,684 --> 00:02:00,685 "You are a freak of nature. "You are an abnormality. 41 00:02:00,685 --> 00:02:02,354 "You are an abnormality. 42 00:02:02,555 --> 00:02:04,892 You are a superhuman." 43 00:02:04,892 --> 00:02:04,960 You are a superhuman." But I'm as human as any person, 44 00:02:04,960 --> 00:02:07,566 But I'm as human as any person, 45 00:02:07,698 --> 00:02:11,005 only I am challenging my body and mind 46 00:02:11,205 --> 00:02:12,407 in nature. 47 00:02:14,311 --> 00:02:17,217 SHATNER: Wim has performed a number of feats that, on the surface, 48 00:02:17,417 --> 00:02:18,386 seem impossible, 49 00:02:18,553 --> 00:02:20,524 such as climbing Mount Everest 50 00:02:20,624 --> 00:02:23,129 wearing nothing but shorts and shoes, 51 00:02:23,362 --> 00:02:28,306 and spending nearly two hours fully immersed in an ice bath. 52 00:02:28,372 --> 00:02:32,081 But what motivated Wim to learn how to brave the cold, 53 00:02:32,280 --> 00:02:34,084 in the first place? 54 00:02:34,251 --> 00:02:35,754 HOF: As a young kid, 55 00:02:35,821 --> 00:02:40,396 I was very interested in anything that was strange... 56 00:02:41,398 --> 00:02:44,606 ...and stories and deeds of people 57 00:02:44,739 --> 00:02:47,745 going into the unknown, so-called. 58 00:02:47,778 --> 00:02:53,155 And when I was 17, I began to go in freezing temperatures. 59 00:02:53,289 --> 00:02:56,663 And there I found a deep connection 60 00:02:56,763 --> 00:03:00,971 with my body, with my god, with a depth. 61 00:03:00,971 --> 00:03:01,004 with my body, with my god, with a depth. And that is now 45 years ago. 62 00:03:01,004 --> 00:03:05,180 And that is now 45 years ago. 63 00:03:05,379 --> 00:03:06,750 And since then, 64 00:03:06,850 --> 00:03:10,523 I have never skipped a day going into the cold. 65 00:03:11,826 --> 00:03:14,699 THOMAS COYNE: In these ungodly, below-freezing temperatures, 66 00:03:14,799 --> 00:03:16,936 your average person can freeze to death 67 00:03:16,936 --> 00:03:16,970 your average person can freeze to death in less than 30 minutes. 68 00:03:16,970 --> 00:03:18,640 in less than 30 minutes. 69 00:03:18,707 --> 00:03:21,980 It's not an environment that's suitable for humans. 70 00:03:23,382 --> 00:03:27,391 So with Wim Hof, his ability to withstand cold 71 00:03:27,558 --> 00:03:29,563 is really extraordinary. 72 00:03:29,695 --> 00:03:33,369 It just makes absolutely no sense. 73 00:03:34,471 --> 00:03:36,108 SHATNER: For an ordinary person, 74 00:03:36,375 --> 00:03:39,314 attempting these feats would result in almost certain death. 75 00:03:39,414 --> 00:03:43,489 And yet Wim Hof doesn't just survive 76 00:03:43,557 --> 00:03:46,930 in frigid temperatures, he seems to thrive in them. 77 00:03:46,963 --> 00:03:48,433 But how? 78 00:03:48,600 --> 00:03:51,640 Well, according to Wim Hof, 79 00:03:51,773 --> 00:03:54,378 this ability doesn't come from his body 80 00:03:54,511 --> 00:03:57,517 but rather from his mind. 81 00:03:58,820 --> 00:04:01,058 If we follow the breath... 82 00:04:01,058 --> 00:04:01,059 If we follow the breath... (inhaling, exhaling) 83 00:04:01,059 --> 00:04:03,429 (inhaling, exhaling) 84 00:04:08,472 --> 00:04:10,611 ...then the mind begins to cease. 85 00:04:11,880 --> 00:04:14,619 I learned how to tap into my brain, 86 00:04:14,785 --> 00:04:17,224 to have a much greater control 87 00:04:17,357 --> 00:04:20,062 than doctors thought was possible. 88 00:04:20,062 --> 00:04:20,129 than doctors thought was possible. When I go in a brain scan or in a fMRI, 89 00:04:20,129 --> 00:04:23,804 When I go in a brain scan or in a fMRI, 90 00:04:23,937 --> 00:04:27,578 and they put cold water upon my skin 91 00:04:27,711 --> 00:04:29,181 with a skin temperature 92 00:04:29,381 --> 00:04:30,450 measurement device, 93 00:04:30,651 --> 00:04:32,453 I'm able to raise... 94 00:04:33,590 --> 00:04:37,297 ...my skin temperature so much that the cold water 95 00:04:37,397 --> 00:04:40,437 is making my skin temperature not going down. 96 00:04:40,536 --> 00:04:42,642 That means that through the psychology, 97 00:04:42,775 --> 00:04:45,714 I caused something physiologically. 98 00:04:48,419 --> 00:04:49,856 MITCH HOROWITZ: Wim Hof's work is being 99 00:04:49,956 --> 00:04:53,563 widely studied right now in academic settings... 100 00:04:54,932 --> 00:04:57,572 ...and what's being found is that 101 00:04:57,638 --> 00:05:02,782 he can get into a kind of transpersonal mental state 102 00:05:02,848 --> 00:05:06,088 where the body is freed from perceived limitations, 103 00:05:06,088 --> 00:05:06,121 where the body is freed from perceived limitations, making him more resilient 104 00:05:06,121 --> 00:05:08,594 making him more resilient 105 00:05:08,693 --> 00:05:11,431 and capable of acts of greater stamina. 106 00:05:12,601 --> 00:05:15,440 We're coming to a whole new realization 107 00:05:15,539 --> 00:05:18,379 of the powers of the mind over the body. 108 00:05:19,949 --> 00:05:22,855 SHATNER: Could Wim Hof's mind be able to regulate 109 00:05:22,922 --> 00:05:26,528 his body's ability to withstand freezing temperatures? 110 00:05:27,898 --> 00:05:30,036 Many experts believe it's possible. 111 00:05:31,773 --> 00:05:33,811 And as evidence, they point to 112 00:05:33,877 --> 00:05:37,016 an ancient Tibetan breathing technique known as "tummo," 113 00:05:37,016 --> 00:05:37,017 an ancient Tibetan breathing technique known as "tummo," which, if done properly, 114 00:05:37,017 --> 00:05:39,723 which, if done properly, 115 00:05:39,822 --> 00:05:42,695 can raise a person's body temperature. 116 00:05:44,699 --> 00:05:45,601 STEVE MAGNESS: Tummo was first 117 00:05:45,767 --> 00:05:47,772 described in the 11th century 118 00:05:47,905 --> 00:05:51,311 and what it translates to is "inner fire." 119 00:05:51,478 --> 00:05:53,082 (chanting in foreign language) 120 00:05:53,182 --> 00:05:56,756 And the practice is meditation guided breathing 121 00:05:56,923 --> 00:05:59,094 where they literally imagine 122 00:05:59,160 --> 00:06:02,702 that their spine is on fire and they can feel this flame 123 00:06:02,868 --> 00:06:04,906 going from their deep inside 124 00:06:05,039 --> 00:06:06,976 all the way to the top of their head. 125 00:06:06,976 --> 00:06:06,977 all the way to the top of their head. And it's believed 126 00:06:06,977 --> 00:06:08,613 And it's believed 127 00:06:08,680 --> 00:06:11,118 that they can raise their core body temperature 128 00:06:11,118 --> 00:06:12,855 and feel that heat 129 00:06:12,921 --> 00:06:16,061 by practicing this meditation and breathing strategy. 130 00:06:16,061 --> 00:06:16,094 by practicing this meditation and breathing strategy. Tummo gave them control 131 00:06:16,094 --> 00:06:18,700 Tummo gave them control 132 00:06:18,800 --> 00:06:23,476 to be able to withstand elements and inner control 133 00:06:23,643 --> 00:06:26,649 amidst this external chaos. 134 00:06:27,718 --> 00:06:28,887 AMIR HUSSAIN: Through this meditative practice, 135 00:06:28,987 --> 00:06:32,361 you're literally able to heat up your body 136 00:06:32,460 --> 00:06:34,632 so you can withstand cold temperatures. 137 00:06:35,834 --> 00:06:38,807 Harvard scientists were able to document Tibetan monks 138 00:06:38,973 --> 00:06:41,813 doing their tummo meditation. 139 00:06:41,846 --> 00:06:45,086 So here they are, stripped naked to the waist, 140 00:06:45,086 --> 00:06:47,090 with sheets over them 141 00:06:47,090 --> 00:06:47,123 with sheets over them in a very, very cold room 142 00:06:47,123 --> 00:06:50,062 in a very, very cold room 143 00:06:50,162 --> 00:06:53,068 and the body heat that they're able to generate 144 00:06:53,168 --> 00:06:55,874 literally makes steam come off the sheets. 145 00:06:55,974 --> 00:06:59,247 It's as if they're covered in a hot, wet blanket, 146 00:06:59,247 --> 00:06:59,280 It's as if they're covered in a hot, wet blanket, but they're doing it internally. 147 00:06:59,280 --> 00:07:02,053 but they're doing it internally. 148 00:07:02,120 --> 00:07:05,460 It's a technique developed about a thousand years ago 149 00:07:05,594 --> 00:07:07,999 among Tibetan monks in the Himalayas, 150 00:07:08,098 --> 00:07:10,236 but it's a technique that anyone can use. 151 00:07:10,236 --> 00:07:10,303 but it's a technique that anyone can use. Anyone can be taught how to do this. 152 00:07:10,303 --> 00:07:12,675 Anyone can be taught how to do this. 153 00:07:12,841 --> 00:07:14,612 (chanting in foreign language) 154 00:07:14,645 --> 00:07:16,482 SHATNER: If tummo can unlock the mind's capacity 155 00:07:16,649 --> 00:07:17,985 to control body temperature, 156 00:07:18,118 --> 00:07:20,825 then it naturally begs the question, 157 00:07:20,891 --> 00:07:25,634 what other incredible abilities do our minds possess? 158 00:07:25,767 --> 00:07:28,172 Well, in the case of Wim Hof, 159 00:07:28,272 --> 00:07:31,245 it appears that he has taken his mental powers 160 00:07:31,511 --> 00:07:36,188 to the next level in order to actually heal his body. 161 00:07:37,691 --> 00:07:41,365 JUSTIN ROSALES: 15 years ago, Wim ran a half marathon barefoot in the snow. 162 00:07:41,531 --> 00:07:43,002 After the half marathon, 163 00:07:43,068 --> 00:07:45,708 one of the medics, um, examined his foot and said, 164 00:07:45,841 --> 00:07:47,444 "Hey, this is, this is pretty bad." 165 00:07:47,510 --> 00:07:50,383 And said, "He has irreparable damage: 166 00:07:50,550 --> 00:07:52,019 third-degree frostbite." 167 00:07:52,019 --> 00:07:52,020 third-degree frostbite." And Wim just was so mad. 168 00:07:52,020 --> 00:07:56,763 And Wim just was so mad. 169 00:07:56,829 --> 00:08:00,069 He just felt like he could do something to heal it. 170 00:08:01,773 --> 00:08:05,614 So Wim was able to start healing his frostbitten foot 171 00:08:05,714 --> 00:08:07,751 by doing his normal breathing exercises 172 00:08:07,918 --> 00:08:09,589 that he had been doing for years 173 00:08:09,655 --> 00:08:12,728 and focusing and visualizing his foot being healed. 174 00:08:12,895 --> 00:08:14,665 And over a month and a half... 175 00:08:15,734 --> 00:08:16,736 ...it did get better. 176 00:08:16,903 --> 00:08:19,174 The skin healed completely. 177 00:08:19,174 --> 00:08:19,207 The skin healed completely. The "irreparable damage," 178 00:08:19,207 --> 00:08:20,878 The "irreparable damage," 179 00:08:20,944 --> 00:08:23,082 that he was not supposed to come back from, was gone. 180 00:08:23,082 --> 00:08:24,952 (exclaiming) 181 00:08:25,086 --> 00:08:26,488 SHATNER: Is it really possible 182 00:08:26,622 --> 00:08:28,927 that Wim Hof is simply using his mind 183 00:08:29,060 --> 00:08:31,566 to perform these superhuman feats? 184 00:08:32,333 --> 00:08:34,572 While that idea may sound far-fetched, 185 00:08:34,672 --> 00:08:37,879 Wim is just the latest in a long line of people 186 00:08:37,978 --> 00:08:41,184 possessing such remarkable abilities. 187 00:08:42,320 --> 00:08:46,462 The concepts that Wim Hof is using 188 00:08:46,629 --> 00:08:48,099 go back to ancient yogic 189 00:08:48,198 --> 00:08:51,271 practices within Vedic or Hindu tradition... 190 00:08:52,841 --> 00:08:54,845 ...that are sometimes called siddhis. 191 00:08:54,945 --> 00:08:57,818 For example, in yogic literature, 192 00:08:57,985 --> 00:09:00,624 you will find records of 193 00:09:00,791 --> 00:09:03,029 different yogis or meditators 194 00:09:03,128 --> 00:09:07,805 who are able to lift enormous weights... 195 00:09:08,840 --> 00:09:12,815 ...or go for extraordinary periods of time 196 00:09:12,981 --> 00:09:15,352 without food, without water, 197 00:09:15,352 --> 00:09:15,353 without food, without water, without breathing. 198 00:09:15,353 --> 00:09:17,323 without breathing. 199 00:09:17,323 --> 00:09:17,390 without breathing. There are some yogic traditions 200 00:09:17,390 --> 00:09:19,729 There are some yogic traditions 201 00:09:19,862 --> 00:09:22,333 in which people are able to pierce the body 202 00:09:22,333 --> 00:09:22,367 in which people are able to pierce the body or lay on beds of nails 203 00:09:22,367 --> 00:09:24,537 or lay on beds of nails 204 00:09:24,638 --> 00:09:28,713 or walk across coals without experiencing pain 205 00:09:28,847 --> 00:09:32,186 or without being disabled by injury. 206 00:09:33,188 --> 00:09:35,561 Could the ability to suppress pain 207 00:09:35,727 --> 00:09:37,530 or even to heal our bodies 208 00:09:37,698 --> 00:09:40,135 be connected to our thoughts? 209 00:09:40,135 --> 00:09:40,136 be connected to our thoughts? It's an exciting notion. 210 00:09:40,136 --> 00:09:42,340 It's an exciting notion. 211 00:09:42,340 --> 00:09:42,373 It's an exciting notion. And it also makes you wonder 212 00:09:42,373 --> 00:09:43,977 And it also makes you wonder 213 00:09:44,077 --> 00:09:48,185 is it possible for anyone to unlock such powers? 214 00:09:49,387 --> 00:09:50,690 I don't think everything Wim does 215 00:09:50,857 --> 00:09:52,227 can be explained by science... 216 00:09:52,260 --> 00:09:53,295 yet. 217 00:09:55,032 --> 00:09:57,972 But he is superhuman, 218 00:09:58,105 --> 00:10:02,949 in a way that he challenges us to 219 00:10:03,115 --> 00:10:05,854 find that part in us, too. 220 00:10:07,858 --> 00:10:10,831 HOF: We have a much more possible control 221 00:10:11,031 --> 00:10:13,402 over our mind and body 222 00:10:13,402 --> 00:10:13,403 over our mind and body than meets the eye. 223 00:10:13,403 --> 00:10:14,905 than meets the eye. 224 00:10:16,041 --> 00:10:20,149 We can learn to raise our capacity to endure 225 00:10:20,282 --> 00:10:24,023 pain and to tackle biological stress. 226 00:10:24,190 --> 00:10:26,328 And that is there for anybody. 227 00:10:27,330 --> 00:10:30,070 Through your mind, you are able to go 228 00:10:30,202 --> 00:10:33,910 further than you have ever been before. 229 00:10:35,012 --> 00:10:37,785 So, if we all just figured out 230 00:10:37,918 --> 00:10:40,958 how to unlock the power of our minds, 231 00:10:41,024 --> 00:10:43,963 would there be no limit to what our bodies could do? 232 00:10:45,099 --> 00:10:48,072 Well, what if I told you there are people out there 233 00:10:48,171 --> 00:10:51,478 who can push themselves to run hundreds of miles 234 00:10:51,478 --> 00:10:57,524 without stopping? 235 00:10:57,758 --> 00:11:01,332 SHATNER: In this small town, in the heart of Marin County, 236 00:11:01,398 --> 00:11:06,474 lives world-renowned ultramarathoner Dean Karnazes. 237 00:11:06,474 --> 00:11:06,475 lives world-renowned ultramarathoner Dean Karnazes. And by all accounts, 238 00:11:06,475 --> 00:11:08,580 And by all accounts, 239 00:11:08,780 --> 00:11:10,951 he was born to run. 240 00:11:12,386 --> 00:11:14,859 My earliest childhood recollections 241 00:11:14,925 --> 00:11:17,831 are running home from school when I was in kindergarten. 242 00:11:17,931 --> 00:11:21,205 Uh, literally, I remember sitting in the classroom 243 00:11:21,338 --> 00:11:22,941 just waiting for the bell to ring. 244 00:11:23,075 --> 00:11:25,412 And as soon as that jingle went off, 245 00:11:25,412 --> 00:11:25,447 And as soon as that jingle went off, I was out of there. 246 00:11:25,447 --> 00:11:26,514 I was out of there. 247 00:11:27,751 --> 00:11:28,987 I felt like, when I was running, 248 00:11:29,120 --> 00:11:31,559 I felt most alive, like, most complete. 249 00:11:32,861 --> 00:11:35,199 It's hard to describe, but I just remember the way 250 00:11:35,332 --> 00:11:37,403 the air used to feel on my skin 251 00:11:37,403 --> 00:11:37,436 the air used to feel on my skin and the leaves changing color. 252 00:11:37,436 --> 00:11:39,140 and the leaves changing color. 253 00:11:39,207 --> 00:11:41,546 I just started relating to the world through running. 254 00:11:42,948 --> 00:11:45,854 LUKE: Dean's somewhat of an icon in the running community 255 00:11:45,920 --> 00:11:49,896 in the sense that he can do things other people can't. 256 00:11:50,062 --> 00:11:51,833 Dean's definitely a superman 257 00:11:51,932 --> 00:11:56,374 in terms of being able to run long distances 258 00:11:56,374 --> 00:11:56,408 in terms of being able to run long distances repetitive days, back-to-back. 259 00:11:56,408 --> 00:11:58,780 repetitive days, back-to-back. 260 00:12:00,382 --> 00:12:01,752 SHATNER: Among Dean's many 261 00:12:01,886 --> 00:12:03,590 record-breaking running achievements 262 00:12:03,856 --> 00:12:07,798 are completing 50 marathons in 50 consecutive days, 263 00:12:07,898 --> 00:12:11,138 running 135 miles across Death Valley-- 264 00:12:11,271 --> 00:12:13,844 one of the hottest regions on Earth-- 265 00:12:13,943 --> 00:12:19,487 and accomplishing a 75-day, 3,000-mile run 266 00:12:19,487 --> 00:12:19,555 and accomplishing a 75-day, 3,000-mile run across the entire United States. 267 00:12:19,555 --> 00:12:22,995 across the entire United States. 268 00:12:24,197 --> 00:12:26,201 But perhaps his most incredible achievement 269 00:12:26,334 --> 00:12:29,273 occurred on October 12, 2005... 270 00:12:30,309 --> 00:12:35,286 ...when Dean ran 350 miles without stopping. 271 00:12:36,354 --> 00:12:40,429 I think I decided to run 350 miles nonstop out of curiosity. 272 00:12:40,429 --> 00:12:40,430 I think I decided to run 350 miles nonstop out of curiosity. I want wanted to see 273 00:12:40,430 --> 00:12:41,866 I want wanted to see 274 00:12:41,966 --> 00:12:43,804 how far I could push my body and my mind. 275 00:12:43,970 --> 00:12:45,540 And I completed it. 276 00:12:45,607 --> 00:12:49,281 It took me 80 hours and 44 minutes of continuous running. 277 00:12:50,449 --> 00:12:53,121 Three days straight without stopping to eat or sleep. 278 00:12:55,325 --> 00:12:57,598 SHATNER: Dean's feats are astounding, 279 00:12:57,864 --> 00:13:00,838 and he's arguably the greatest athlete in the history 280 00:13:00,970 --> 00:13:03,508 of what is called ultrarunning. 281 00:13:03,609 --> 00:13:06,916 MAGNESS: Ultrarunning is any distance running 282 00:13:07,049 --> 00:13:09,153 that goes further than the marathon. 283 00:13:09,253 --> 00:13:11,993 So it could be anything from 30 miles 284 00:13:12,159 --> 00:13:13,428 all the way up to races 285 00:13:13,528 --> 00:13:16,334 that are hundreds or even thousands of miles. 286 00:13:17,336 --> 00:13:19,608 The six-day race was the precursor 287 00:13:19,608 --> 00:13:19,641 The six-day race was the precursor to modern ultramarathon running. 288 00:13:19,641 --> 00:13:21,645 to modern ultramarathon running. 289 00:13:21,645 --> 00:13:21,713 to modern ultramarathon running. It originated in the 1700s in England. 290 00:13:21,713 --> 00:13:25,019 It originated in the 1700s in England. 291 00:13:25,185 --> 00:13:26,656 These athletes tried to cover 292 00:13:26,922 --> 00:13:30,396 as much distance as they possibly could in six days. 293 00:13:30,496 --> 00:13:33,669 So they would sleep as little as possible, 294 00:13:33,936 --> 00:13:37,844 often only getting an hour or two of sleep during each day, 295 00:13:37,944 --> 00:13:40,483 to try and cover as much distance as possible. 296 00:13:41,585 --> 00:13:45,026 Early on, these athletes would run 400 and 500 miles. 297 00:13:46,060 --> 00:13:49,635 But in 1888 George Littlewood set a new record 298 00:13:49,902 --> 00:13:53,442 for the six-day challenge, covering 623 miles. 299 00:13:53,508 --> 00:13:58,351 So that's over 100 miles a day of running or walking. 300 00:13:59,320 --> 00:14:01,091 That was so good 301 00:14:01,191 --> 00:14:03,863 that that record almost stood 100 years, 302 00:14:04,030 --> 00:14:05,935 until Yiannis Kouros, 303 00:14:06,034 --> 00:14:08,005 a Greek runner who was one of the best 304 00:14:08,138 --> 00:14:11,177 ultrarunners in history, finally broke it. 305 00:14:11,211 --> 00:14:14,618 So that gives you an indication of how good these athletes are. 306 00:14:16,488 --> 00:14:18,125 SHATNER: But it's not just athletes 307 00:14:18,191 --> 00:14:21,665 who choose to run such mind-boggling distances. 308 00:14:21,665 --> 00:14:21,732 who choose to run such mind-boggling distances. In fact, there's an entire community 309 00:14:21,732 --> 00:14:24,337 In fact, there's an entire community 310 00:14:24,437 --> 00:14:27,911 that runs just as far as ultramarathoners do... 311 00:14:29,080 --> 00:14:33,121 ...and they've been doing it for thousands of years. 312 00:14:38,699 --> 00:14:42,139 Here in this harsh region of 10,000 foot plateaus, 313 00:14:42,306 --> 00:14:45,279 far from modern civilization, 314 00:14:45,379 --> 00:14:49,220 live a group of people known as the Rarámuri. 315 00:14:50,557 --> 00:14:52,126 Descended from a prehistoric society 316 00:14:52,326 --> 00:14:53,796 of foragers and hunters, 317 00:14:54,063 --> 00:14:58,138 the Rarámuri still live in relatively primitive conditions. 318 00:14:58,205 --> 00:15:03,182 But incredibly, they possess a unique ability to run 319 00:15:03,315 --> 00:15:06,454 for hundreds of miles in a single day. 320 00:15:06,521 --> 00:15:09,962 TOK THOMPSON: The name Rarámuri seems to be derived from 321 00:15:10,095 --> 00:15:12,233 meaning "those who run fast." 322 00:15:12,333 --> 00:15:15,306 So, not surprisingly, the Rarámuri are known 323 00:15:15,439 --> 00:15:17,545 as exceptional long-distance runners, 324 00:15:17,644 --> 00:15:20,049 far in excess of what most people think 325 00:15:20,215 --> 00:15:21,986 people should be able to do. 326 00:15:23,121 --> 00:15:25,292 They have running competitions and running rituals 327 00:15:25,359 --> 00:15:29,033 that would put a lot of other long-distance runners to shame. 328 00:15:30,068 --> 00:15:32,173 They don't have the modern accoutrements 329 00:15:32,373 --> 00:15:33,375 or modern sneakers. 330 00:15:33,508 --> 00:15:34,979 They tend to run in either sandals 331 00:15:35,145 --> 00:15:36,583 or barefoot. 332 00:15:36,682 --> 00:15:40,657 And they do this as a big part of their culture. 333 00:15:43,228 --> 00:15:44,765 SHATNER: Since the dawn of mankind, 334 00:15:44,765 --> 00:15:44,865 SHATNER: Since the dawn of mankind, our ability to run for a long period of time 335 00:15:44,865 --> 00:15:47,069 our ability to run for a long period of time 336 00:15:47,203 --> 00:15:50,008 has given humans a great advantage... 337 00:15:51,244 --> 00:15:53,415 ...especially when it came to hunting and searching for food. 338 00:15:53,448 --> 00:15:56,622 THOMPSON: Humans are one of the best long-distance runners 339 00:15:56,622 --> 00:15:56,655 THOMPSON: Humans are one of the best long-distance runners in the entire animal kingdom. 340 00:15:56,655 --> 00:15:58,392 in the entire animal kingdom. 341 00:15:58,425 --> 00:16:03,401 We could actually run down things like deer and antelope. 342 00:16:03,535 --> 00:16:05,540 We're not as fast in the short run, 343 00:16:05,673 --> 00:16:07,410 but in terms of long-distance running, 344 00:16:07,543 --> 00:16:09,615 a human being could, theoretically, 345 00:16:09,715 --> 00:16:12,621 run down just about any animal on Earth. 346 00:16:14,156 --> 00:16:15,693 SHATNER: In ancient times, 347 00:16:15,760 --> 00:16:19,433 running was not only used as a means of stalking prey. 348 00:16:19,533 --> 00:16:24,310 It was also a method of long-range communication. 349 00:16:25,546 --> 00:16:28,152 MAGNESS: Running served a vital purpose for the Ancient Greeks. 350 00:16:28,285 --> 00:16:31,057 They served as couriers or messengers. 351 00:16:31,157 --> 00:16:33,663 They were essentially the ancient mail system 352 00:16:33,663 --> 00:16:35,432 for the Greeks, 353 00:16:35,499 --> 00:16:40,309 and it was vital for military strategy in particular. 354 00:16:41,579 --> 00:16:45,253 RIC RADER: In antiquity, the best way to convey messages, 355 00:16:45,419 --> 00:16:47,223 especially matters of war, 356 00:16:47,356 --> 00:16:49,060 matters of religion, and so forth, 357 00:16:49,193 --> 00:16:51,666 was to send a "hemerodromos." 358 00:16:51,765 --> 00:16:53,970 So that's the Greek word for a day runner. 359 00:16:54,170 --> 00:16:55,974 It was a special class 360 00:16:56,207 --> 00:17:00,783 of people specifically trained for this and specifically 361 00:17:00,783 --> 00:17:00,817 of people specifically trained for this and specifically equipped physiologically 362 00:17:00,817 --> 00:17:02,855 equipped physiologically 363 00:17:03,121 --> 00:17:06,027 not only to deliver a message in a timely fashion, 364 00:17:06,227 --> 00:17:07,296 but to do it 365 00:17:07,463 --> 00:17:10,703 over very rugged terrain, 366 00:17:10,703 --> 00:17:10,737 over very rugged terrain, over several hundred miles. 367 00:17:10,737 --> 00:17:12,406 over several hundred miles. 368 00:17:13,508 --> 00:17:15,112 So, in that regard, 369 00:17:15,178 --> 00:17:18,419 the extent to which the hemerodromos can perform 370 00:17:18,552 --> 00:17:20,489 these amazing feats would suggest 371 00:17:20,590 --> 00:17:24,297 that it requires a kind of superhuman ability. 372 00:17:25,432 --> 00:17:27,403 SHATNER: In the case of Dean Karnazes, 373 00:17:27,570 --> 00:17:30,409 his superhuman running ability 374 00:17:30,442 --> 00:17:34,551 may be due to the fact that he is actually of Greek descent. 375 00:17:34,618 --> 00:17:37,791 KARNAZES: I think my ability to run long distances 376 00:17:37,891 --> 00:17:40,095 is influenced, definitely, by my Greek heritage. 377 00:17:40,295 --> 00:17:41,832 I'm 100% Greek 378 00:17:41,899 --> 00:17:43,468 and Greece is the birthplace of long-distance running, 379 00:17:43,602 --> 00:17:45,305 and I've known that for a long time. 380 00:17:46,608 --> 00:17:49,013 I think I have the natural ability 381 00:17:49,113 --> 00:17:52,353 to run long distances from my heritage. 382 00:17:52,453 --> 00:17:54,390 But having the will to do it is another thing. 383 00:17:54,490 --> 00:17:57,396 And I think I just have the will to do it. 384 00:17:58,498 --> 00:18:03,108 Is the ability to run for days on end actually hereditary? 385 00:18:03,274 --> 00:18:05,112 Well, even if that's true, 386 00:18:05,212 --> 00:18:09,153 it doesn't explain another superhuman ability: 387 00:18:09,253 --> 00:18:12,226 the ability to swim hundreds of feet underwater 388 00:18:12,393 --> 00:18:14,698 without taking a single breath. 389 00:18:21,879 --> 00:18:23,983 SHATNER: Lying within the coastal mountains 390 00:18:24,150 --> 00:18:25,720 of this frigid landscape 391 00:18:25,720 --> 00:18:27,456 is Lake Qorlortoq. 392 00:18:28,525 --> 00:18:30,831 Covered beneath a million tons of ice, 393 00:18:30,897 --> 00:18:34,170 its crystal blue waters hover at a hypothermia-inducing 394 00:18:34,336 --> 00:18:36,141 33 degrees Fahrenheit. 395 00:18:36,307 --> 00:18:38,378 One degree above freezing. 396 00:18:39,513 --> 00:18:41,686 Wearing only a pair of swim trunks, 397 00:18:41,752 --> 00:18:45,893 four-time world champion free diver Stig Severinsen 398 00:18:45,893 --> 00:18:45,927 four-time world champion free diver Stig Severinsen plunges into the icy water 399 00:18:45,927 --> 00:18:47,897 plunges into the icy water 400 00:18:47,897 --> 00:18:47,965 plunges into the icy water in an attempt to set a new record 401 00:18:47,965 --> 00:18:50,269 in an attempt to set a new record 402 00:18:50,435 --> 00:18:53,208 for the longest swim under ice. 403 00:18:54,578 --> 00:18:57,450 Without an oxygen tank and unable to surface, 404 00:18:57,584 --> 00:19:00,355 he risks unconsciousness and death 405 00:19:00,522 --> 00:19:04,097 as he swims 250 feet underwater, 406 00:19:04,196 --> 00:19:07,904 or nearly the length of a football field. 407 00:19:07,904 --> 00:19:07,938 or nearly the length of a football field. SEVERINSEN: When most people 408 00:19:07,938 --> 00:19:10,275 SEVERINSEN: When most people 409 00:19:10,442 --> 00:19:11,946 jump in ice-cold water... 410 00:19:12,212 --> 00:19:15,318 (snorting) ...they start gasping and they panic. 411 00:19:16,521 --> 00:19:17,523 Within minutes, 412 00:19:17,690 --> 00:19:20,495 you become icy cold to the core, 413 00:19:20,630 --> 00:19:24,504 and your body can simply shut down. 414 00:19:24,604 --> 00:19:27,610 I understand that people think it's crazy or wild 415 00:19:27,610 --> 00:19:29,313 or stupid, even. 416 00:19:29,480 --> 00:19:31,250 You know? Unbelievable. 417 00:19:31,417 --> 00:19:32,754 But I love to challenge science. 418 00:19:32,854 --> 00:19:35,192 I love to challenge the human physiology. 419 00:19:35,392 --> 00:19:36,695 Human potential. 420 00:19:41,939 --> 00:19:43,576 -That is great. -Wow. 421 00:19:43,709 --> 00:19:45,713 SHATNER: Stig's swim beneath the ice 422 00:19:45,813 --> 00:19:48,719 wasn't the first time he went to extremes. 423 00:19:51,023 --> 00:19:54,296 In May of 2012, he also held his breath 424 00:19:54,463 --> 00:19:58,104 for an astonishing 22 minutes. 425 00:19:58,371 --> 00:20:01,612 But what would compel someone to push themselves to the limit, 426 00:20:01,745 --> 00:20:04,785 risking death just to pull off a stunt? 427 00:20:05,753 --> 00:20:07,223 HOROWITZ: Some of us 428 00:20:07,322 --> 00:20:09,761 seem to be hardwired to push the limits. 429 00:20:09,761 --> 00:20:09,762 seem to be hardwired to push the limits. Some of us seem to crave 430 00:20:09,762 --> 00:20:12,332 Some of us seem to crave 431 00:20:12,499 --> 00:20:16,609 excitement, intensity, euphoria. 432 00:20:16,708 --> 00:20:20,215 There seem to be a certain fraction of people 433 00:20:20,382 --> 00:20:23,856 in need of physical activities 434 00:20:23,923 --> 00:20:26,662 or other kinds of activities that push the limits of 435 00:20:26,762 --> 00:20:30,269 safety or human possibility or perseverance. 436 00:20:30,402 --> 00:20:33,976 Now, it's a question as to whether 437 00:20:33,976 --> 00:20:34,043 Now, it's a question as to whether these people are seeking euphoria 438 00:20:34,043 --> 00:20:35,914 these people are seeking euphoria 439 00:20:35,980 --> 00:20:39,320 or whether they're seeking some greater, 440 00:20:39,420 --> 00:20:41,391 more visceral connection with themselves. 441 00:20:42,493 --> 00:20:46,401 Humans have this drive and this need to seek novelty, 442 00:20:46,501 --> 00:20:49,841 to see what's on the other side of the unknown. 443 00:20:49,941 --> 00:20:53,816 And it's something that is incredibly dangerous, 444 00:20:53,883 --> 00:20:59,026 but also makes us able to do insanely difficult things. 445 00:21:00,328 --> 00:21:02,332 SHATNER: In the late 18th and early 19th centuries, 446 00:21:02,432 --> 00:21:05,038 a new breed of thrill seekers popularized 447 00:21:05,105 --> 00:21:09,413 the public display of pushing the limits of human ability, 448 00:21:09,480 --> 00:21:13,188 risking life and limb to perform death-defying feats 449 00:21:13,321 --> 00:21:15,359 in pursuit of fame and fortune. 450 00:21:15,492 --> 00:21:17,964 And the first of these daredevils 451 00:21:17,964 --> 00:21:17,998 And the first of these daredevils was a man named Sam Patch. 452 00:21:17,998 --> 00:21:21,337 was a man named Sam Patch. 453 00:21:21,437 --> 00:21:23,242 DARRIN McMAHON: Sam Patch was the Evil Knievel 454 00:21:23,408 --> 00:21:24,845 of the early 19th century. 455 00:21:24,978 --> 00:21:26,815 They called him "the Jersey Jumper," 456 00:21:26,815 --> 00:21:26,816 They called him "the Jersey Jumper," "the Yankee Leaper." 457 00:21:26,816 --> 00:21:28,084 "the Yankee Leaper." 458 00:21:28,084 --> 00:21:28,118 "the Yankee Leaper." He liked to jump off things. 459 00:21:28,118 --> 00:21:29,854 He liked to jump off things. 460 00:21:29,921 --> 00:21:34,732 Famously, they had a platform erected in Niagara Falls 461 00:21:34,864 --> 00:21:36,569 so that he could jump into the water, 462 00:21:36,635 --> 00:21:40,442 but from a really high level: 75 or 100 feet. 463 00:21:40,576 --> 00:21:42,947 Unfortunately, it's risky business, 464 00:21:42,947 --> 00:21:42,981 Unfortunately, it's risky business, and in 1829, on Friday the 13th, 465 00:21:42,981 --> 00:21:45,686 and in 1829, on Friday the 13th, 466 00:21:45,820 --> 00:21:49,460 he either slipped or fell awkwardly 467 00:21:49,526 --> 00:21:51,765 and didn't go in feet first as he normally did. 468 00:21:52,867 --> 00:21:55,272 The audience of several thousand heard a splat, 469 00:21:55,405 --> 00:21:56,875 and he was never seen from again. 470 00:21:58,411 --> 00:22:00,449 SHATNER: But Sam Patch's tragic demise 471 00:22:00,549 --> 00:22:03,856 did not deter other would-be daredevils. 472 00:22:03,989 --> 00:22:06,662 Over the next century, countless more 473 00:22:06,828 --> 00:22:08,732 followed in his footsteps, 474 00:22:08,832 --> 00:22:11,772 increasing the danger with every attempt. 475 00:22:13,809 --> 00:22:17,249 Including one who went to the next level 476 00:22:17,416 --> 00:22:19,755 by taking to the skies. 477 00:22:19,854 --> 00:22:22,760 SCOTT EDEN: Clem Sohn was an aerialist, 478 00:22:22,827 --> 00:22:27,069 one of the first, maybe the first to build for himself 479 00:22:27,069 --> 00:22:27,102 one of the first, maybe the first to build for himself a kind of gliding suit. 480 00:22:27,102 --> 00:22:28,706 a kind of gliding suit. 481 00:22:29,808 --> 00:22:31,545 He would jump out of airplanes 482 00:22:31,612 --> 00:22:35,820 with the wings attached and a kind of tail structure. 483 00:22:35,886 --> 00:22:38,491 McMAHON: One of his nicknames was "the Birdman." 484 00:22:38,626 --> 00:22:40,897 He would glide for thousands of feet 485 00:22:41,030 --> 00:22:43,535 and then eventually pull the ripcord 486 00:22:43,702 --> 00:22:45,940 and parachute to safety, 487 00:22:46,040 --> 00:22:48,679 and he did this on both sides of the Atlantic. 488 00:22:48,779 --> 00:22:52,019 Unfortunately, outside of Paris in 1937, 489 00:22:52,085 --> 00:22:55,025 in front of a crowd of as many as 100,000 people... 490 00:22:56,027 --> 00:22:57,396 ...he glided through the air, 491 00:22:57,529 --> 00:23:00,068 and then his first chute failed to open... 492 00:23:01,638 --> 00:23:05,546 ...and then the second one, and he plunged to his death. 493 00:23:11,758 --> 00:23:13,361 SHATNER: The practice of performing 494 00:23:13,461 --> 00:23:16,568 thrill-seeking feats is alive and well today, 495 00:23:16,635 --> 00:23:19,708 even if not all daredevils survive their attempts 496 00:23:19,874 --> 00:23:21,611 to push the limits. 497 00:23:22,613 --> 00:23:24,483 But why do so many human beings 498 00:23:24,584 --> 00:23:27,490 feel the need to pursue incredible feats, 499 00:23:27,623 --> 00:23:29,928 even if it means risking our lives? 500 00:23:31,163 --> 00:23:33,201 MAGNESS: Pushing boundaries and pushing limits 501 00:23:33,201 --> 00:23:33,234 MAGNESS: Pushing boundaries and pushing limits is part of our human nature. 502 00:23:33,234 --> 00:23:35,071 is part of our human nature. 503 00:23:36,140 --> 00:23:38,111 You would think that would be counterintuitive. 504 00:23:38,177 --> 00:23:41,818 Seeking pain seems like not the brightest thing to do 505 00:23:41,918 --> 00:23:44,691 because we're going against our survival. 506 00:23:45,726 --> 00:23:49,601 If you look at any animal in the animal kingdom, 507 00:23:49,701 --> 00:23:51,972 none of them really do things that go against 508 00:23:51,972 --> 00:23:51,973 none of them really do things that go against survival instincts. 509 00:23:51,973 --> 00:23:53,576 survival instincts. 510 00:23:53,742 --> 00:23:55,211 They just want to survive. 511 00:23:56,247 --> 00:23:57,884 Human beings, on the other hand... 512 00:23:59,486 --> 00:24:01,892 ...we will seek out things that put us 513 00:24:01,992 --> 00:24:06,768 at immense risk and not for any external reward, 514 00:24:06,868 --> 00:24:10,577 but really for the internal reward of doing it. 515 00:24:10,676 --> 00:24:14,183 Seeking something difficult, something hard, 516 00:24:14,183 --> 00:24:14,249 Seeking something difficult, something hard, often makes people feel alive. 517 00:24:14,249 --> 00:24:17,155 often makes people feel alive. 518 00:24:19,761 --> 00:24:22,466 Is it possible that by risking death, 519 00:24:22,700 --> 00:24:27,243 people can unlock the ability to perform superhuman feats? 520 00:24:27,309 --> 00:24:29,848 Well, there's a famous story from American folklore 521 00:24:29,981 --> 00:24:32,854 which suggests that might be true. 522 00:24:32,954 --> 00:24:35,693 It's the tale of someone who defied the odds 523 00:24:35,860 --> 00:24:38,397 in a competition that pitted man 524 00:24:38,599 --> 00:24:41,738 against machine. 525 00:24:44,243 --> 00:24:46,147 SHATNER: For centuries, mankind 526 00:24:46,147 --> 00:24:46,180 SHATNER: For centuries, mankind has told stories about people 527 00:24:46,180 --> 00:24:47,850 has told stories about people 528 00:24:47,984 --> 00:24:50,590 who have the ability to perform feats 529 00:24:50,689 --> 00:24:54,731 that require extraordinary physical strength. 530 00:24:54,898 --> 00:24:57,436 But why are we so fascinated 531 00:24:57,570 --> 00:25:00,008 by these superhuman characters? 532 00:25:01,010 --> 00:25:02,847 LYNNE McNEILL: We love stories 533 00:25:02,880 --> 00:25:07,189 about humans that push the boundaries of exceptionalism. 534 00:25:07,289 --> 00:25:11,932 And history is full of this kind of folk hero... 535 00:25:12,934 --> 00:25:16,609 ...who is stronger than any other human. 536 00:25:16,675 --> 00:25:19,681 We have characters like Hercules who are half god. 537 00:25:19,814 --> 00:25:21,785 That's the source of his strength. 538 00:25:22,820 --> 00:25:24,824 There's someone like Samson, from the Bible, 539 00:25:24,958 --> 00:25:26,862 whose hair gives him strength 540 00:25:26,962 --> 00:25:29,601 beyond what a normal human might have. 541 00:25:29,734 --> 00:25:32,807 And nowadays, we have superheroes: 542 00:25:32,874 --> 00:25:37,482 Batman, Spiderman, characters who similarly are human, 543 00:25:37,583 --> 00:25:40,657 but a little bit better than other humans. 544 00:25:40,856 --> 00:25:42,960 All these stories 545 00:25:43,094 --> 00:25:46,501 let us talk about the possibilities 546 00:25:46,601 --> 00:25:49,373 of human endurance and human capability. 547 00:25:49,373 --> 00:25:49,440 of human endurance and human capability. How far can we push ourselves? 548 00:25:49,440 --> 00:25:51,645 How far can we push ourselves? 549 00:25:51,745 --> 00:25:54,383 How much faster and stronger can we be? 550 00:25:59,794 --> 00:26:03,201 SHATNER: Here, at the foot of the Allegheny Mountains, 551 00:26:03,301 --> 00:26:05,539 lies a decommissioned railroad tunnel 552 00:26:05,706 --> 00:26:08,746 known as the Great Bend Tunnel. 553 00:26:08,879 --> 00:26:10,750 According to folklore, 554 00:26:10,883 --> 00:26:12,753 this was the site of a famous legend 555 00:26:12,954 --> 00:26:14,658 from the 1870s 556 00:26:14,791 --> 00:26:16,562 about a superhuman railroad worker 557 00:26:16,761 --> 00:26:19,968 named John Henry. 558 00:26:21,103 --> 00:26:24,778 TEMPLE: The legend is that John Henry was six-six, 280 pounds, 559 00:26:24,944 --> 00:26:27,315 muscular, solid, glistening. 560 00:26:27,315 --> 00:26:27,382 muscular, solid, glistening. You could see him half a mile away. 561 00:26:27,382 --> 00:26:29,754 You could see him half a mile away. 562 00:26:30,890 --> 00:26:33,161 The legend has it that he was born in enslavement, 563 00:26:33,261 --> 00:26:35,298 and he had all these goals for his family 564 00:26:35,298 --> 00:26:35,332 and he had all these goals for his family coming out of enslavement. 565 00:26:35,332 --> 00:26:37,068 coming out of enslavement. 566 00:26:37,235 --> 00:26:39,339 And he says, "I want a good job. 567 00:26:39,339 --> 00:26:39,406 And he says, "I want a good job. I want to provide for my family." 568 00:26:39,406 --> 00:26:41,243 I want to provide for my family." 569 00:26:41,377 --> 00:26:45,152 And he saw the C&O railroad laying track 570 00:26:45,251 --> 00:26:48,124 and John Henry shows up and says, "I'm your guy." 571 00:26:49,827 --> 00:26:53,534 The fable has it that any man who signed up to work 572 00:26:53,802 --> 00:26:58,546 would get 50 acres of land if they completed the railroad. 573 00:26:58,712 --> 00:26:59,981 And sometimes this railroad 574 00:27:00,081 --> 00:27:02,185 had to be completed through a mountain. 575 00:27:02,219 --> 00:27:05,659 And so John Henry not simply laid rail, the railroad track, 576 00:27:05,759 --> 00:27:08,397 but he had to drive a stake into the rock, 577 00:27:08,464 --> 00:27:12,105 which creates enough space to then load dynamite. 578 00:27:13,140 --> 00:27:15,345 John Henry was the best steel driver, 579 00:27:15,445 --> 00:27:18,317 and then here comes a man with a steam drill. 580 00:27:19,353 --> 00:27:22,026 The legend speaks of this race taking place 581 00:27:22,158 --> 00:27:24,664 between John Henry and the machine. 582 00:27:24,831 --> 00:27:26,835 (train whistle blows) 583 00:27:27,002 --> 00:27:29,039 SHATNER: As the story goes, 584 00:27:29,139 --> 00:27:30,776 there was a competition between John Henry 585 00:27:30,910 --> 00:27:33,348 and the machine to see which of them 586 00:27:33,447 --> 00:27:35,653 could drill farthest into the side of the mountain 587 00:27:35,853 --> 00:27:37,557 in a single day. 588 00:27:37,757 --> 00:27:39,326 During the contest, 589 00:27:39,393 --> 00:27:41,832 the strength of John Henry was reportedly so powerful, 590 00:27:41,932 --> 00:27:44,003 that the blows from his twin sledgehammers 591 00:27:44,169 --> 00:27:47,042 shook the mountain itself. 592 00:27:48,745 --> 00:27:50,048 The story is that 593 00:27:50,181 --> 00:27:52,452 the steam drill only went nine feet. 594 00:27:52,452 --> 00:27:52,453 the steam drill only went nine feet. John Henry went 14. 595 00:27:52,453 --> 00:27:54,891 John Henry went 14. 596 00:27:55,926 --> 00:27:58,031 And so John Henry is superhuman 597 00:27:58,164 --> 00:27:59,734 and more supreme than the machine. 598 00:28:00,501 --> 00:28:01,939 NAMA: John Henry 599 00:28:02,072 --> 00:28:05,244 beats the machine in this competition. 600 00:28:07,048 --> 00:28:08,719 But he passes away: 601 00:28:08,885 --> 00:28:10,521 he dies of a heart attack. 602 00:28:11,891 --> 00:28:14,496 He dies from overexertion. 603 00:28:14,496 --> 00:28:14,497 He dies from overexertion. And what we have here 604 00:28:14,497 --> 00:28:16,902 And what we have here 605 00:28:17,035 --> 00:28:20,743 is John Henry begins to symbolize 606 00:28:20,843 --> 00:28:24,918 this overpowering physique of a muscleman 607 00:28:25,084 --> 00:28:28,024 and the ability to achieve 608 00:28:28,190 --> 00:28:30,829 in the face of extreme odds. 609 00:28:32,165 --> 00:28:35,806 TEMPLE: The legend of John Henry represents this Black man, 610 00:28:35,939 --> 00:28:37,977 this hero who did superhuman feats, 611 00:28:38,144 --> 00:28:40,048 from the 19th century. 612 00:28:40,114 --> 00:28:43,656 It overshadows the harshness of the Reconstruction period, 613 00:28:43,855 --> 00:28:45,458 but it also shows us how 614 00:28:45,458 --> 00:28:45,525 but it also shows us how Black men who were able-bodied, 615 00:28:45,525 --> 00:28:47,062 Black men who were able-bodied, 616 00:28:47,262 --> 00:28:49,200 who had that spirit of 617 00:28:49,299 --> 00:28:51,771 willing to do anything they needed to do 618 00:28:51,905 --> 00:28:54,009 to provide for their families. 619 00:28:56,013 --> 00:29:00,254 McNEILL: Most of us know about John Henry from a literary work. 620 00:29:01,390 --> 00:29:03,461 Like so many folk heroes 621 00:29:03,562 --> 00:29:06,935 from the same time period in American history, 622 00:29:07,068 --> 00:29:12,279 Paul Bunyan, Joe Magarac, Pecos Bill, 623 00:29:12,379 --> 00:29:15,552 they are all compatriots of John Henry in this 624 00:29:15,552 --> 00:29:15,586 they are all compatriots of John Henry in this larger-than-life, super capable 625 00:29:15,586 --> 00:29:18,792 larger-than-life, super capable 626 00:29:18,959 --> 00:29:21,531 American folk hero model. 627 00:29:21,831 --> 00:29:26,040 And what they capture is the spirit of industry 628 00:29:26,173 --> 00:29:29,547 that our nation so badly wanted to embody 629 00:29:29,547 --> 00:29:29,614 that our nation so badly wanted to embody and project to the rest of the world 630 00:29:29,614 --> 00:29:31,718 and project to the rest of the world 631 00:29:31,885 --> 00:29:33,487 at this point in history. 632 00:29:33,487 --> 00:29:33,521 at this point in history. (playing "John Henry") 633 00:29:33,521 --> 00:29:35,525 (playing "John Henry") 634 00:29:38,431 --> 00:29:41,705 SHATNER: The legend of John Henry's battle against the steam drill 635 00:29:41,938 --> 00:29:45,813 was first immortalized in an African American folk ballad, 636 00:29:45,913 --> 00:29:49,253 and since then, the inspirational story 637 00:29:49,386 --> 00:29:52,159 has also been celebrated numerous times 638 00:29:52,325 --> 00:29:55,632 in magazines, plays, and books. 639 00:29:57,268 --> 00:29:59,340 Another superhuman feat of John Henry 640 00:29:59,439 --> 00:30:02,145 is that he was able to inspire so many. 641 00:30:02,312 --> 00:30:04,483 And so whether it's inspiring 642 00:30:04,584 --> 00:30:07,088 in terms of actually working on the railroad 643 00:30:07,188 --> 00:30:10,797 or other industries, John Henry was a beacon of that. 644 00:30:10,929 --> 00:30:13,534 Also, in terms of him losing his life, 645 00:30:13,534 --> 00:30:15,371 that's a sacrifice 646 00:30:15,471 --> 00:30:18,277 that those who came after him could appreciate, 647 00:30:18,377 --> 00:30:21,885 as they strive to be as good as John Henry. 648 00:30:22,653 --> 00:30:24,557 NAMA: There also is an overlap, 649 00:30:24,657 --> 00:30:26,961 certainly, with John Henry and superheroes. 650 00:30:28,230 --> 00:30:32,807 In the early 1990s, Superman passed away, 651 00:30:32,973 --> 00:30:34,510 and that set up a situation 652 00:30:34,610 --> 00:30:38,284 for the comic book version of John Henry 653 00:30:38,451 --> 00:30:40,321 to come in and save the day... 654 00:30:41,423 --> 00:30:43,863 ...as the character of Steel 655 00:30:43,962 --> 00:30:47,068 in order to save the citizens of Metropolis. 656 00:30:47,202 --> 00:30:52,479 He builds a suit, encased in steel, 657 00:30:52,546 --> 00:30:55,753 and carries, of all things-- would you believe it?-- 658 00:30:55,953 --> 00:30:57,355 a sledgehammer. 659 00:30:58,424 --> 00:30:59,928 And that speaks to kind of, like, 660 00:31:00,061 --> 00:31:02,131 the reinterpretation of John Henry 661 00:31:02,198 --> 00:31:05,706 within the framework of the superhero afro-futuristic 662 00:31:05,706 --> 00:31:07,342 sci-fi version. 663 00:31:08,712 --> 00:31:12,419 TEMPLE: The idea that John Henry is a superhero, 664 00:31:12,485 --> 00:31:16,393 standing firmly in that space of post-enslavement 665 00:31:16,493 --> 00:31:18,732 and Reconstruction, is really phenomenal. 666 00:31:18,999 --> 00:31:22,038 The legend of John Henry proves that human strength 667 00:31:22,205 --> 00:31:24,811 is inherent in all of us. 668 00:31:25,044 --> 00:31:30,088 Was John Henry's victory over the steam drill just a myth, 669 00:31:30,254 --> 00:31:32,292 or did it actually happen? 670 00:31:32,358 --> 00:31:35,633 Either way, the story suggests that people can perform 671 00:31:35,699 --> 00:31:39,539 incredible feats when placed in dire circumstances. 672 00:31:40,541 --> 00:31:42,212 Like in the case of two teenage girls 673 00:31:42,312 --> 00:31:44,517 who saved their father from certain death 674 00:31:44,617 --> 00:31:47,556 with a sudden burst of superhuman strength. 675 00:31:54,469 --> 00:31:57,275 SHATNER: While clearing the grounds of his property, 676 00:31:57,375 --> 00:32:00,214 Jeff Smith loops a chain around a tree stump... 677 00:32:01,483 --> 00:32:03,688 ...and attaches the other end to his tractor. 678 00:32:04,757 --> 00:32:06,595 But when he throws 679 00:32:06,661 --> 00:32:10,569 the 3,000-pound vehicle into reverse, disaster strikes. 680 00:32:13,240 --> 00:32:15,244 My boots were fairly muddy, 681 00:32:15,344 --> 00:32:17,683 and my foot slipped off the clutch. 682 00:32:20,021 --> 00:32:23,629 And the whole tractor just tipped flat back over on me. 683 00:32:23,662 --> 00:32:25,332 Ah! 684 00:32:25,398 --> 00:32:28,605 The steering wheel ended up burying into my chest 685 00:32:28,605 --> 00:32:28,672 The steering wheel ended up burying into my chest right about where my heart is, 686 00:32:28,672 --> 00:32:31,578 right about where my heart is, 687 00:32:31,644 --> 00:32:34,349 and pinned me in between the tractor and the ground. 688 00:32:36,320 --> 00:32:38,158 SHATNER: Pinned beneath 3,000 pounds of steel, 689 00:32:38,324 --> 00:32:39,760 Jeff screams out in agony. 690 00:32:39,794 --> 00:32:41,531 (screams) 691 00:32:41,631 --> 00:32:43,301 His anguished cries draw the attention 692 00:32:43,400 --> 00:32:45,606 of his teenage daughters, Hannah and Haylee. 693 00:32:46,774 --> 00:32:49,647 But with the nearest town 20 minutes away, there's no time 694 00:32:49,647 --> 00:32:49,681 But with the nearest town 20 minutes away, there's no time to wait for help to arrive. 695 00:32:49,681 --> 00:32:51,384 to wait for help to arrive. 696 00:32:51,416 --> 00:32:52,954 (groaning) 697 00:32:53,053 --> 00:32:55,860 While my dad was under the tractor, he was... 698 00:32:56,059 --> 00:32:56,895 He couldn't breathe, 699 00:32:57,061 --> 00:32:59,200 his oxygen was really low. 700 00:32:59,332 --> 00:33:02,372 He kept going in and out of consciousness. 701 00:33:02,472 --> 00:33:06,581 He was pale, his lips were kind of blue. 702 00:33:06,714 --> 00:33:08,351 Me and my sister knew at that point 703 00:33:08,517 --> 00:33:10,054 that we were the only ones 704 00:33:10,187 --> 00:33:12,058 and the only chance that my dad had. 705 00:33:13,595 --> 00:33:14,764 HAYLEE SMITH: I was just like 706 00:33:14,764 --> 00:33:14,797 HAYLEE SMITH: I was just like so frozen and just so shocked. 707 00:33:14,797 --> 00:33:17,737 so frozen and just so shocked. 708 00:33:17,770 --> 00:33:19,941 (groaning) 709 00:33:20,107 --> 00:33:22,479 And I go and I look at my dad. 710 00:33:22,646 --> 00:33:25,418 He's just like, could not talk, 711 00:33:25,552 --> 00:33:27,624 and his blood vessels in his eyes, 712 00:33:27,756 --> 00:33:30,094 you could see them popping one by one. 713 00:33:30,161 --> 00:33:32,266 And it was just horrible. I had no idea what to do. 714 00:33:32,465 --> 00:33:34,770 So my sister says... 715 00:33:34,770 --> 00:33:34,838 So my sister says... (sniffles) "Come help me lift it." 716 00:33:34,838 --> 00:33:37,009 (sniffles) "Come help me lift it." 717 00:33:37,241 --> 00:33:39,012 (groaning) 718 00:33:39,112 --> 00:33:41,450 SHATNER: As their father gasps for breath, 719 00:33:41,551 --> 00:33:43,354 the two sisters frantically grab the front 720 00:33:43,520 --> 00:33:45,358 of the massive tractor, 721 00:33:45,524 --> 00:33:47,897 set their heels into the ground, 722 00:33:48,130 --> 00:33:49,768 and lift. 723 00:33:49,800 --> 00:33:51,270 (grunting) 724 00:33:51,403 --> 00:33:52,840 HAYLEE: When we tried to lift it, 725 00:33:52,840 --> 00:33:54,844 it did not move. 726 00:33:56,480 --> 00:33:59,119 I was just done, and Hannah was just screaming, 727 00:33:59,219 --> 00:34:01,123 "We have to do it again, we have to do it again." 728 00:34:02,525 --> 00:34:03,996 And I just remember putting my hands up, 729 00:34:04,162 --> 00:34:04,931 and I was just like, 730 00:34:05,164 --> 00:34:06,734 "How?" 731 00:34:07,836 --> 00:34:11,444 And she just said, "Count." And so we counted. 732 00:34:11,510 --> 00:34:13,782 And I just remember thinking, like, "God, help me. 733 00:34:13,782 --> 00:34:13,848 And I just remember thinking, like, "God, help me. Give me the strength to do this." 734 00:34:13,848 --> 00:34:15,518 Give me the strength to do this." 735 00:34:16,587 --> 00:34:20,028 And she said, "One, two, three" and we lifted it. 736 00:34:20,261 --> 00:34:22,566 (grunting) 737 00:34:22,700 --> 00:34:24,737 SHATNER: Together, the two teenage girls 738 00:34:24,804 --> 00:34:28,211 managed to hoist the tractor one foot off the ground... 739 00:34:28,444 --> 00:34:30,683 (grunting) 740 00:34:30,716 --> 00:34:34,757 ...allowing their father enough room to wiggle out and escape. 741 00:34:36,694 --> 00:34:39,199 My girls lifted a 3,000-pound tractor off me 742 00:34:39,399 --> 00:34:40,434 and saved my life. 743 00:34:40,569 --> 00:34:43,041 So, I mean, if my girls had not have 744 00:34:43,173 --> 00:34:45,511 shown that kind of mysterious strength 745 00:34:45,612 --> 00:34:49,219 of being able to lift that off my chest... 746 00:34:50,454 --> 00:34:52,860 ...I don't think I would have lasted another five minutes. 747 00:34:52,860 --> 00:34:52,926 ...I don't think I would have lasted another five minutes. What boggles my mind to this day, 748 00:34:52,926 --> 00:34:54,831 What boggles my mind to this day, 749 00:34:54,930 --> 00:34:58,938 which is almost ten years later, is that... 750 00:34:58,938 --> 00:34:58,972 which is almost ten years later, is that... they were able to do it. 751 00:34:58,972 --> 00:35:00,675 they were able to do it. 752 00:35:00,742 --> 00:35:03,080 It's just, to be able to lift that much weight and... 753 00:35:03,213 --> 00:35:05,151 and save my life is... 754 00:35:05,919 --> 00:35:07,656 ...incredible. 755 00:35:07,723 --> 00:35:11,530 It's insane to think that that was even a possibility. 756 00:35:12,566 --> 00:35:14,571 SHATNER: How did two teenagers-- 757 00:35:14,670 --> 00:35:17,442 each weighing no more than 125 pounds-- 758 00:35:17,542 --> 00:35:21,283 find the strength to lift a massive tractor? 759 00:35:22,251 --> 00:35:24,222 Scientists believe the source of their 760 00:35:24,322 --> 00:35:26,894 superhuman strength may have actually been 761 00:35:26,894 --> 00:35:26,895 superhuman strength may have actually been a surge of adrenaline. 762 00:35:26,895 --> 00:35:29,132 a surge of adrenaline. 763 00:35:29,232 --> 00:35:31,938 There's many stories that you hear about 764 00:35:32,238 --> 00:35:36,714 of people doing superhuman feats of strength... 765 00:35:37,750 --> 00:35:40,322 ...and this usually is driven by adrenaline. 766 00:35:40,488 --> 00:35:42,492 Adrenaline is that hormone 767 00:35:42,525 --> 00:35:46,333 that can tap into resources of strength that you might have 768 00:35:46,466 --> 00:35:48,838 when you need it in that split second 769 00:35:48,838 --> 00:35:48,872 when you need it in that split second to drive your whole body 770 00:35:48,872 --> 00:35:52,045 to drive your whole body 771 00:35:52,245 --> 00:35:53,313 to push to the limits 772 00:35:53,480 --> 00:35:56,554 and do whatever is necessary. 773 00:35:57,790 --> 00:35:59,894 You see it in battle. 774 00:35:59,894 --> 00:35:59,961 You see it in battle. You hear about it in an emergency. 775 00:35:59,961 --> 00:36:03,701 You hear about it in an emergency. 776 00:36:03,802 --> 00:36:06,941 Adrenaline can make the body do amazing things. 777 00:36:08,477 --> 00:36:09,647 SHATNER: Scientists have been studying 778 00:36:09,747 --> 00:36:11,751 the remarkable effects of adrenaline 779 00:36:11,884 --> 00:36:14,924 since it was first discovered in 1901. 780 00:36:16,259 --> 00:36:19,299 McMAHON: Jokichi Takamine was a Japanese chemist 781 00:36:19,365 --> 00:36:22,506 who spent most of his career in the United States, 782 00:36:22,606 --> 00:36:25,178 and he's the first person to identify, 783 00:36:25,277 --> 00:36:28,618 purify, and eventually trademark adrenaline. 784 00:36:29,820 --> 00:36:33,962 And he was able to isolate the naturally occurring hormone 785 00:36:33,962 --> 00:36:33,995 And he was able to isolate the naturally occurring hormone adrenaline in sheep and oxen 786 00:36:33,995 --> 00:36:36,133 adrenaline in sheep and oxen 787 00:36:36,266 --> 00:36:38,872 and to withdraw it and to purify it. 788 00:36:40,374 --> 00:36:42,278 EDEN: Jokichi Takamine described 789 00:36:42,411 --> 00:36:44,650 the whole idea of the adrenaline rush 790 00:36:44,817 --> 00:36:46,486 as a harnessing of reservoirs 791 00:36:46,654 --> 00:36:48,792 of power and a violent sort of 792 00:36:48,892 --> 00:36:51,229 explosion of energy that occurs in people 793 00:36:51,396 --> 00:36:53,768 who are in crisis situations. 794 00:36:55,471 --> 00:36:58,978 SHATNER: Did a rush of adrenaline allow Hannah and Haylee Smith 795 00:36:58,978 --> 00:36:59,012 SHATNER: Did a rush of adrenaline allow Hannah and Haylee Smith to lift a 3,000-pound tractor? 796 00:36:59,012 --> 00:37:02,219 to lift a 3,000-pound tractor? 797 00:37:02,351 --> 00:37:04,590 It's a fascinating possibility, 798 00:37:04,690 --> 00:37:08,464 and suggests that we all have untapped strength 799 00:37:08,565 --> 00:37:11,336 that can be unlocked at a moment's notice. 800 00:37:12,305 --> 00:37:14,643 JEFF: I feel like that their love 801 00:37:14,677 --> 00:37:18,417 granted them enough power to be able to do what they had to do. 802 00:37:18,585 --> 00:37:20,455 But when it comes down to it, 803 00:37:20,555 --> 00:37:21,825 I think everybody's got a little bit of 804 00:37:21,924 --> 00:37:24,329 that kind of superhuman ability in them. 805 00:37:24,462 --> 00:37:26,233 It's just a matter of tapping into it 806 00:37:26,466 --> 00:37:29,740 and finding the right situation where it drives them to do it. 807 00:37:31,677 --> 00:37:33,815 The idea that a shot of adrenaline 808 00:37:33,882 --> 00:37:36,721 can give an ordinary person the ability to perform 809 00:37:36,888 --> 00:37:39,627 remarkable feats is fascinating. 810 00:37:39,660 --> 00:37:43,066 Believe it or not, there are scientists who are currently 811 00:37:43,367 --> 00:37:48,144 trying to harness other kinds of natural powers 812 00:37:48,343 --> 00:37:49,947 to turn us all into 813 00:37:49,947 --> 00:37:52,553 superhumans. 814 00:37:52,586 --> 00:37:54,623 ♪ ♪ 815 00:38:10,087 --> 00:38:12,291 SHATNER: At the University of Connecticut's 816 00:38:12,391 --> 00:38:14,763 Department of Genetics and Genome Sciences, 817 00:38:14,930 --> 00:38:17,502 there is a lab that is home to 818 00:38:17,636 --> 00:38:19,908 dozens of genetically altered mice. 819 00:38:20,007 --> 00:38:22,880 While these rodents might appear quite ordinary, 820 00:38:22,980 --> 00:38:25,686 their DNA has actually been modified 821 00:38:25,785 --> 00:38:29,560 to make them 30% stronger than normal mice. 822 00:38:30,729 --> 00:38:33,835 Researchers have found ways to increase muscle mass, 823 00:38:33,835 --> 00:38:35,305 muscle tissue 824 00:38:35,437 --> 00:38:38,978 in ordinary mice to demonstrate 825 00:38:38,978 --> 00:38:39,012 in ordinary mice to demonstrate extraordinary endurance. 826 00:38:39,012 --> 00:38:41,483 extraordinary endurance. 827 00:38:41,617 --> 00:38:44,757 It's a kind of Mighty Mouse effect. 828 00:38:44,823 --> 00:38:48,932 And so the question becomes whether this can be translated 829 00:38:48,932 --> 00:38:50,535 to the human form. 830 00:38:50,635 --> 00:38:53,875 The possibility that DNA manipulation 831 00:38:53,942 --> 00:38:57,214 might enable people to enjoy heightened strength and stamina 832 00:38:57,415 --> 00:38:58,851 is intriguing. 833 00:38:58,952 --> 00:39:01,356 And in fact, humans have been searching for ways 834 00:39:01,523 --> 00:39:03,293 to enhance our natural abilities 835 00:39:03,460 --> 00:39:04,931 for thousands of years. 836 00:39:04,997 --> 00:39:06,634 EDEN: If you go back to the ancient Greeks, 837 00:39:06,834 --> 00:39:07,970 the original Olympics, 838 00:39:08,103 --> 00:39:10,541 there are historical records of them 839 00:39:10,709 --> 00:39:12,580 working with wine potions 840 00:39:12,779 --> 00:39:14,316 and various herbs 841 00:39:14,449 --> 00:39:16,588 to give themselves performance enhancement. 842 00:39:16,754 --> 00:39:18,056 And then, in terms of 843 00:39:18,156 --> 00:39:20,629 modern use of performance-enhancing drugs, 844 00:39:20,829 --> 00:39:22,098 it's the Cold War. 845 00:39:22,098 --> 00:39:22,099 it's the Cold War. The Soviet Union had 846 00:39:22,099 --> 00:39:23,533 The Soviet Union had 847 00:39:23,701 --> 00:39:26,674 a massive drug doping program 848 00:39:26,841 --> 00:39:30,047 as part of its sports programs 849 00:39:30,114 --> 00:39:33,789 in efforts to defeat the West in every level, 850 00:39:33,921 --> 00:39:36,995 militarily as well as in sport. 851 00:39:37,128 --> 00:39:40,869 So the urge to do that, to outcompete 852 00:39:41,002 --> 00:39:42,873 everyone else on the playing field 853 00:39:43,006 --> 00:39:45,044 has been with us for, uh, forever. 854 00:39:46,747 --> 00:39:51,523 HOROWITZ: Since the early 1980s, the military has been interested 855 00:39:51,624 --> 00:39:55,097 in researching the creation of super soldiers... 856 00:39:56,099 --> 00:39:58,705 ...using exoskeletons 857 00:39:58,871 --> 00:40:02,445 or robotic assists to limbs, 858 00:40:02,612 --> 00:40:05,552 or using magnetic waves 859 00:40:05,652 --> 00:40:09,025 to help people overcome the problems 860 00:40:09,125 --> 00:40:12,866 of fatigue associated with sleep deprivation, 861 00:40:12,966 --> 00:40:16,173 or increasing strength, increasing sight, 862 00:40:16,473 --> 00:40:19,813 increasing the ability to see around corners, 863 00:40:19,947 --> 00:40:23,454 see in the dark, see behind you, 864 00:40:23,654 --> 00:40:25,626 to allow them to perform 865 00:40:25,725 --> 00:40:29,266 incredible feats that are otherwise impossible. 866 00:40:29,532 --> 00:40:32,405 McMAHON: Our desire always to improve ourselves 867 00:40:32,505 --> 00:40:34,844 is at the source of so much of what we do. 868 00:40:35,010 --> 00:40:36,781 At a very elementary level, 869 00:40:36,847 --> 00:40:40,856 human beings want to distinguish themselves. 870 00:40:40,955 --> 00:40:43,929 We want to do what others haven't done. 871 00:40:43,995 --> 00:40:47,234 We're always restless, questing for something else, 872 00:40:47,234 --> 00:40:47,268 We're always restless, questing for something else, pursuing something else, 873 00:40:47,268 --> 00:40:49,640 pursuing something else, 874 00:40:49,773 --> 00:40:52,879 and it's somewhat of a perverse need. 875 00:40:54,015 --> 00:40:56,353 SHATNER: Will technology push human performance 876 00:40:56,519 --> 00:40:58,424 beyond its natural limits? 877 00:40:58,558 --> 00:41:00,829 Many scientists believe it's possible. 878 00:41:00,895 --> 00:41:03,467 But the truth is that human beings already possess 879 00:41:03,634 --> 00:41:05,739 extraordinary capabilities 880 00:41:05,839 --> 00:41:09,212 that we are only beginning to understand. 881 00:41:09,212 --> 00:41:10,380 LUKE: I think, 882 00:41:10,582 --> 00:41:12,351 in some cases, 883 00:41:12,518 --> 00:41:14,389 people don't know that they have 884 00:41:14,556 --> 00:41:16,192 these talents and capacities... 885 00:41:17,228 --> 00:41:19,365 ...until they're put in the right situation 886 00:41:19,532 --> 00:41:21,403 where they have to call on them. 887 00:41:21,637 --> 00:41:25,813 And as we start understanding more about the science of genes, 888 00:41:25,912 --> 00:41:30,454 we'll realize that there may be talents 889 00:41:30,588 --> 00:41:33,728 and potentials that we can unlock 890 00:41:33,861 --> 00:41:35,832 that we didn't otherwise know about. 891 00:41:37,234 --> 00:41:39,707 Just when we think we know the limits of our mental 892 00:41:39,873 --> 00:41:41,510 and physical capabilities, 893 00:41:41,677 --> 00:41:43,815 another extraordinary person 894 00:41:43,981 --> 00:41:45,586 comes along and performs 895 00:41:45,685 --> 00:41:47,790 a superhuman feat that breaks the boundaries 896 00:41:47,989 --> 00:41:49,526 of what is possible. 897 00:41:49,693 --> 00:41:51,831 So, perhaps in the future, 898 00:41:51,897 --> 00:41:56,172 mankind will unlock even more incredible abilities 899 00:41:56,172 --> 00:41:56,206 mankind will unlock even more incredible abilities that, for now, remain... 900 00:41:56,206 --> 00:41:58,611 that, for now, remain... 901 00:41:59,813 --> 00:42:00,949 ...unexplained. 902 00:42:01,082 --> 00:42:02,719 CAPTIONING PROVIDED BY A+E NETWORKS