To help maintain body warmth. If you think about the caveman , they were alot hairier. They didn't have as many ways of staying warm as we do. They had to hunt animals to get th skin to cover their bodies and learn to build fires. As human evolution goes on we lose more and more hair since we don't really need it. We have adapted throughout the years.
Why do humans grow hair?
Pretend I'm god
Ohh I'm sorry son, you didn't want to grow long beautiful hair?
Just pretend he's talking to everybody and they say no and then everybody would be bald.
Why do humans grow hair?
we evolved from having oodles of hair- and the first reason, was for warmth.
thats still why we have so much hair on our heads- to keep the head and more importantly the brain warm.
hair in other places keeps dirt and dust out, and im sure helps a little bit in the sensation of touch. :)
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