Runner's high motivated the evolution of exercise

Thursday, March 22, 2012 - 08:30 in Psychology & Sociology

In the last century something unexpected happened: humans became sedentary. We traded in our active lifestyles for a more immobile existence. But these were not the conditions under which we evolved. David Raichlen from the University of Arizona explains that our hunter-gatherer predecessors were long-distance endurance athletes.

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