Why do humans have eyebrows and pubic hair, and underarm hair, is there a purpose for it?

Eyebrows serve to help keep sweat out of your eyes and help shade your eyes from the sun. Pubic hair and underarm hair are there to help evaporate sweat.

Why do humans have eyebrows and pubic hair, and underarm hair, is there a purpose for it?

Eyebrows keep sweat and particles out of your eyes, pubic hair helps broadcast pheromones, and... underarm hair. I dont know about that.

Maybe its used as a sweat-catcher?

Why do humans have eyebrows and pubic hair, and underarm hair, is there a purpose for it?

to keep blowing sand out of our eyes

to keep you pubic area warm for repoduction

cut down on skin rubing

Why do humans have eyebrows and pubic hair, and underarm hair, is there a purpose for it?

Protection, to keep things out of your eyes and other areas. These areas of our body are vulnerable and "soft" so we have a bit of extra protection there.

Why do humans have eyebrows and pubic hair, and underarm hair, is there a purpose for it?

Who Knows?

Why do humans have eyebrows and pubic hair, and underarm hair, is there a purpose for it?

eyebrows are to keep dust and sweat out of your eyes.

and i read in an anatomy textbook that the rest is 'to prevent friction'. not so convinced by that one...

Why do humans have eyebrows and pubic hair, and underarm hair, is there a purpose for it?

Eyebrows are probably to catch sweat that would roll into your eyes.

It has been suggested by some that the purpose of pubic hair is to act as a "cushion" from the bumping of the two bodies during sex. Some women who've been talked into shaving their pubic areas complain that when a man is vigorous during sex it can hurt more than if they have some hair there.

Why do humans have eyebrows and pubic hair, and underarm hair, is there a purpose for it?

Eyebrows keep sweat and particles, like dust, out of your eyes. They also enhance facial expressions for non-verbal communication.

Pubic hair, of which armpit hair is a type, are visual signs of sexual maturity. The also catch sebum, which is a special kind of sweat excreted in these regions that is full of pheromones. This helps attract the opposite sex, unless you never wash and bacteria starts to grow there and stink really bad.

A lot of men like the natural smell of a woman, rather than a woman that has freshly showered. Pheromone junkies. Me? I am a proud pheromone junkie. I would prefer my wife never shave her armpits. Hairy armpits are sexy and are considered to be an erogenous zone on a woman's body.

Hope this helps.