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[–]HelloMomo 13 insightful - 2 fun13 insightful - 1 fun14 insightful - 2 fun -  (1 child)

There are a couple theories that hold that humans evolved to be long-distance runners, who chase prey until it collapses of heat exhaustion. By being hairless and sweaty, humans could run for longer than other species before the heat exhaustion got to us.

Even though this is a thing the human body evolved to be able to do, very few humans actually do it.

[–]bopomofodojo 7 insightful - 1 fun7 insightful - 0 fun8 insightful - 1 fun -  (0 children)

This is a good analogy. Not absolutely everything that evolves for useful reasons is used by every individual every day (or even at all). It's about general trends in an entire species.