SGMD Gupta 3 Tips to Run Better_00010613.jpg
Run the right way: like prehistoric man
Dan Lieberman tells Dr. Sanjay Gupta how human beings evolved to be great long-distance runners.
3:19 • Source: CNN
Pushing your body to its limit 4 videos
SGMD Gupta 3 Tips to Run Better_00010613.jpg
Run the right way: like prehistoric man
3:19
Now playing
• Source: CNN
Vital Signs Breaking the 2-hour marathon A_00040020.jpg
Breaking the 2-hour marathon
7:56
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• Source: CNN
Vital Signs Pushing our bodies to the limit B_00001123.jpg
Pushing our bodies to the limit
7:29
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• Source: CNN
Vital Signs Take the plunge in Scotland  C_00011116.jpg
Take the plunge in Scotland
7:49
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• Source: CNN