> The author Daniel Lieberman has put it well: Exercise is healthy and rewarding even though it’s something we never evolved to do.
We have ostensibly spent much of our evolutionary budget on the ability to run ~indefinitely no matter what. Compared to virtually any other animal, we can vastly outperform them in the most arduous environments. Our bodies are mechanically optimized for running at every level. We have connective tissue that stores and releases energy. Our bodies can reject on the order of 1kW+ of heat steady-state through the magic of evaporative cooling.
We have ostensibly spent much of our evolutionary budget on the ability to run ~indefinitely no matter what. Compared to virtually any other animal, we can vastly outperform them in the most arduous environments. Our bodies are mechanically optimized for running at every level. We have connective tissue that stores and releases energy. Our bodies can reject on the order of 1kW+ of heat steady-state through the magic of evaporative cooling.