Without doctors, mass media, and the Internet, cavemen had no choice but to listen to their bodies if they didn't feel optimal. Everyone is different. Some people have trouble with dairy, while others can't stomach wheat. One thing's certain: We can all benefit from a little self-experimentation. The paleo movement believes in learning the rhythms of your own body and eating and exercising in accordance to how you as an individual thrive best.
Credit: Getty Images
The 2014 Adventure Issue
From Iceland's Highway 1 to Utah's Canyonlands, an epic itinerary for modern explorers.
Plus: Building a Bigger Action Hero
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Duke Lacrosse and the Fog of Scandal
How Thailand's Most Notorious Prison Became a Fight Club
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