Why Humans Lost Their Body Hair?
I'll summarize the article for you, if you're too lazy to click on the associated url to read more about it.
But according to scientific american, there are three theories why human lost their body hair:
1. Our bodies shed our hair because our ancestors spent much of their time in shallow waters looking for food. Since hair isn't very efficient in water, we shed them over the years.
2. Another theory suggested that we shed the hair so we wouldn't overheat time spent in the sun and desert.
3. The last theory is that we got rid of our body hair to combat lice and other parasite that lives in hair. This sounds really plausible.
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