What purpose does Arm hairs searve?
375186
retain moisture to keep you cool
330221
well i used to shave my arms and yes it damaged myskin i had bumss on my skin for months and they just now went away.
886974
yes.  it's going to be disgusting, but think about it this way.  your armpits have hair under them.  it's considered a dry lubricant so the skin of your rib area and your arm don't get stuck together.  think about it now with your anus.  you don't want feces getting stuck to the skin of your rear end.  that's the best way i can put it.
672969
It has to be a personal preference.\n\nBesides collecting sweat, when you perspire, there is no other hygenical advantage of shaving.\n\nIf you go to a gym, men may look at you funny in the showers ...hmmmm\n\nYour wife may appreciate it, unless you get razor burns, then YOU definetely wont appreciate it...  Or, if you happen to "nick" yourself, its very unpleasant.\n\nPutting up with the itching as it grows back, (unless you shave it every day, then its a chore), will drive you nuts, and I suggest you stay home for a few days, or you will be a scene at public places with you scratching like you have crabs or something... :)\n\nBut, like I said, its a personal preference... \n\nI wish you well..\n\nJesse
349125
hair growth is primarily involved in protecting underlying structures, and for the purposes of keeping warm.  Gorilla's have hair all over and some maybe longer, if it is the arms this would indicated they are vulnerable parts exposed to trauma and cold.  we too are covered in hair but most of it is very short.  we have evolved our hair pattern to provide protection to our vulnerable areas...such as the head, the genitals, the arm pit, eyebrows.  however many men have hairy chests too, they dont need protection here anymore but evolution hasnt caught up with us yet...and maybe it serves as attaction feature for females.  Hairyness is related to high levels of testosterone so u should thinkabout that fact too...testosterone fueled males are more attractive to females
404795
flap your arms in water.
246682
no, those are just to make your biceps look bigger\nthey have no real purpose at all, except making you look bigger and stronger
359348
One difference we have in comparison with a lot of other mammals is that we have a lot of sweat glands in our skin. They help to prevent our bodies from overheating, especially during exercise. As sweat cooling your body works best if the air on your skin can move easily (and especially if a breeze of air is blowing) I would guess that fur/hair would decrease the efficiency of this cooling system a lot. As humans are supposed to have evolved in warm areas of Afrika, protection from cold was not an issue for keeping hair. And protection from sunburn - as a upright walking species we kept our hair on the place where sunburn would be most of a problem. \nThat's my guess, so that may not be true, but I read not too long ago that sweating allows humans to exercise much longer without overheating than a lot of animals (and so hunt an animal to its heat exhaustion, despite if may be able to run faster), if you look up these studies you may find more.\nPS. I found at least one source for that theory, I added it below
102654
Purpose of pubic hair\nIt is believed that the functions of pubic hair include the dissemination of pheromones, protection from the friction of sexual intercourse; natural selection may also have sustained it insofar as it can symbolize sexual maturity to a potential sexual partner. Pubic hair and the growth between the tops of the legs and the buttocks, like under arm hair, helps to lubricate the areas, making movement smoother and more comfortable.\n\n[edit]\nPossible reasons\nThere is no definitive theory on the reason for the existence of pubic hair. The prevailing theory relates to pheromones — scents that the body produces that can be sexually stimulating to others. In this theory, the tufts of hair that grow around the genitals, as well as under the arms, capture these erotic scents. Pheromones get trapped in the pubic hair when apocrine glands release an odorless secretion on the surface of the skin that combines with bacteria decomposed by the secretions of the sebaceous glands. Humans have the same number of hair follicles as apes, but body hair is generally very fine or barely visible in comparison. So, while pubic hair and underarm hair might be considered the primary scent traps, they are not the only ones. For some people, scents from these areas are noticeable and consciously increase sexual arousal. Pheromones might not be obvious but may be detected subconsciously.\n\nAnother theory is that the pubic hair keeps the genitals warm. The purpose of women's pubic hair could be similar to that of the cilia in the nose, in that it prevents small foreign particles from entering the vagina. Of course this doesn't explain male pubic hair.
62802
Evolution doesn't eliminate everything which is useless. It will remove anything which is a disadvantage. For example, if it slows us down while running or makes us less intelligent, then it would have disappeared long ago.\n\nPubic and underarm hair may not have a reason to exist, but it also doesn't harm us, so it's still around. It may or may not disappear from humanity several thousand years from now.\n\nA few other points:\n- Some people believe that the underarm and pubic hair is used to reduce chafing. You'll notice that the crotch and armpits are two areas where the human body rubs against itself the most.\n- Some people believe that the underarm and pubic hair is used to hold in the pheromones that we produce. The crotch and underarms are two of the smelliest places on the human body.\n- In Asia, there are people who are actually born without underarm or pubic hair. However, in places like Korea, pubic hair is considered a sign of fertility, so many of the women born without pubic hair actually transplant hair from their head to their pubic area.
627783
It doesn't-- it's an old myth. As the drying skin recedes from the bone, more nail is exposed giving it the appearance of growth. As for the hair, I guess it was just an assumption since it still looks normal after the skin shrivels.
431216
No. A small muscle raises the hair so that it can trap in your body heat.
1099605
Upwards.   Shaving downwards causes skin irritation.
479559
The function of the eyebrow hair is to prevent debris such as dandruff and other small objects from falling into the eyes, as well as providing sense of something near the eye, and prevent water or sweat from dripping into the eye.
1079737
what's the purpose of the gloves
485456
More rosin, yes, and try using more weight from the arm. And perhaps even the hair is still not tight enough. Probably more rosin (a good brand is Nymans) will do.
258113
This is what society has come up with for the flabby skin on your underarms that keeps on waving after you've stopped. a GUY i dated a few times brought mine to my attention , needless to say we did not stay together much longer after that!