Humans have a lot of hair: on the face, head, body, armpits, and in many other places. However, although science has been able to explain the function of these hairs in different parts of the body in one way or another, There’s one place hair doesn’t seem justified: the back.
So, to try to solve the puzzle, members SciShow Channel for Scientific Publishing on YouTube They began to study the subject by searching the scientific literature. Unfortunately, it’s easy to imagine There are few studies on this topic. And the only thing that can be done is endoscopy (by the way, why does more hair grow on the head than on the rest of the body?).
According to one theory, there is no hair on the buttocks without a reason: Because they are at the “evolutionary level”, they do not cause any inconvenience, and there is no need to lose them, even if they are useless. The theories don’t stop there: According to another point of view, you’re using donkey hair Amplify the smell of our ass. Yes, you read correctly.
It is possible, in fact, that early humans used this “fragrance” as an important means of communication. The ability to spread the “smell of the rectum” to a person, by the way, would have given our ancestors the ability to mark their territory and attract potential mates (as well as colonies!).
There is also a third theory that states that The hair on the back is useful for reducing rubbing and rubbing as we move.. By retaining the sweat, the hair prevents the buttocks from suffering from irritation and rashes. In short, given that these are theories that have not been studied in detail, there may be other reasons as well.
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