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This is something left from the animal kingdom; like with monkeys, humans were originally suppose to have hair all over the body to keep them from freezing to death in cold periods, but humans have evolved and now use clothes - the hair we have left I presume is simply what's left from that period, and that humans might be on the way to developing a completely hairless body. We also use these hairs to trap heat still. They are also used for sensation; they tell the brain when they feel something.

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16y ago

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