Why do boys grow hair on their penis?

Answer 1

Because the male body produces testosterone, a hormone .

Yes exactly, if you look at some men, some are hairier than others, if a man has a really hairy chest, legs, shoulders etc, like I have, he will, and I can say this from experience, have a very hairy penis I know a man who is not at all hairy on the chest, arms, legs and no hair on his shoulders what so ever, we are not gay but I was just wondering how hairy or not hairy he was on his penis. We examined each others private parts and he has only got a few hairs on his penis compared to me, however, he still has a reasonable amount of hair around it, like most men have, so it does vary a lot, so if you see a hairy guy, chest, arms, you can be sure he also has high testosterone levels and of course a hairy penis, by the way, there is a tendency, not 100% for men with hairy penises to have above average size ones, again high testosterone causes that.

Answer 2

It stops it sticking to your thigh when you get hot and sweaty for one thing. Having your scrotum stick to your thigh, which it does when your scrotum first grows during puberty but before you grow hairs on it, can be unpleasant and potentially painful. The hair also creates a micro-climate around your scrotum which helps to regulate its temperature. The main reason though is that it is probably a left over trait that we have inherited from out distant ape like ancestors.

Answer 3

because the animals we originated from (monkeys) had hair all over their body to protects it, these days hair only grows on parts of the body that need protecting from germs and stuff, like the penis.

Answer 4

The development of pubic hair is completely normal and is a part of puberty. It is a sign that you are developing from a boy into a man.

Rising Androgen's in the body during puberty set the pubic and underarm hair growing. Hormones are responsible for this.

Answer 5

Part of testoterone: the male driven hormone that rapidly evlolves the human body.