eli5: Why do our bodies release heat when we exercise? Shouldn’t it be trying to conserve the energy?
In: Biology
Our bodies need a relatively narrow temperature range to operate at maximum efficiency, gentle muscle activity is ideal for maintaining that temperature, but high levels of exercise take the temperature up too high and the excess needs to be got rid of it before it damages the body. One of the reasons why cheetahs can’t run for very long is the sprints create so much heat that it can’t shed the excess heat quickly enough.
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