An anthropologist poses a theory suggesting that along with diet and exercise, our bodies might need environmental stress—like exposure to cold and hot temperatures—if we’re to reach our full potential. The logic behind this idea is similar to explanations for why we need to eat healthy food and work out. Nature is brutal, and we have evolved to survive in a harsh world, but now modern technology shields us from those physical challenges. Without those physical challenges, our bodies are losing our evolutionary strength. Take a look here to get a better understanding of the third pillar of physical fitness.
How a third pillar of physical fitness may exist beyond diet and exercise
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