Why does the hair on your head and face grow long whlie the hair on you body stays short?
338040
Hair follicles have a dormancy cycle, productivity rate and life expectancy.\n\nEach follicle's nature is determined by genetic makeup. Chemicals can also affect these, as estrogen tends to suppress facial follicles' productivity for example. \n\nBody hair generally goes into dormancy more often than head hair. When the follicle goes dormant, it temporarily stops growing hair, and the hair falls out. Body hair also has lower productivity than head hair.\n\nThat is why body hair is shorter than head hair. It grows a bit slower and falls out sooner.\n\nAlso genetically programmed is the ability of a follicle to come out of dormancy. So people who go bald have follicles that have gradually come less and less out of dormancy (peach fuzz) until they stop working entirely. Because this is genetic to the follicle, a follicle not programmed to 'die off' transplanted from an other area on the head to the bald area will continue to function, just as programmed.
309067
The hair follicles are different on each part of your body.  All areas grow at different rates.  And it does keep growing on your arms, just very slowly.  \n\nTry shaving your arms or waxing them.  You'll find that the hair comes back, but to that same length.  So it is growing.
2357
It is a myth that hair keeps growing after we die. As our bodies begin to decompose after death we loose moisture and skin begins to shrink but hair and nails do not shrink therefore making it appear to be growing.
918528
it doesn't make them harrier, it just makes it appear like it is, because when your hair grows back, they all grow back at the same time/length.
393736
hair, because hair does not live once out of the follicle.
582572
I'm gonna assume that the pituitary gland in you brain regulates the hair growth and stops sending the hormones necessary for it to grow once it realizes how long it is.
387934
long hair? short hair? Curly hair? Face structure???? can't answer that one.  You don't give enough detail.
428285
Each human has a terminal length for their hair. It is different from person to person, but I am sure you have seen pictures from women in the 19th century with hair down to the floor. Well, I found that my terminal length is a bit lower than my shoulder blades. However, potential terminal length and the real life length of your hair when you try to grow it as long as possible are two things. \nEvery hair follicle grows a defined cycle (e.g. 4-8 yrs) and after that it stops growing and falls out (and a new one starts to re-grow). The speed of growth also varies from person to person. The actual length hair can achieve in this time however is completely dependent on other factors: Sun expsure, hairstyles, perms, dyes, overcaring, overbrushing etc. all can damage long hair and break it of, thereby reducing its length. \nI hope this helps
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
654501
You have two different types of bodily hair.  One is called terminal and the other is called vellus.  Terminal hair is the longer growing hair that is on your head, legs and things like that.  So, to answer why do they keep growing it is bc of the type of hair it is.  The vellus hair doesn't know how long it is....it only grows to a certain length according to your own body type.  I hope this helped a little bit
318702
The hair has always been there.  Puberty makes it grow thicker and darker.\n\nNobody is completely sure why our thick patches of body hair remain there.  The most common explanation is to serve as evaporation surfaces for pheremones.
408004
because when you get cold your body shrinks a little bit to conserve energy. but the skin around the little hairs is attached so it doesn't shrink with they rest of the skin. so there are little bumps
337043
The hair follicles on our head are different in structure from those that produce body hair. The length of body hair is determined by our genes (some folks are shaggier than others) but will never get as long as the hair grows on your head.\n\nWhen a hair follicle enters a new growth period, it starts to secrete the proteins that make up a hair shaft. The new hair grows out from the root plexus of the follicle until it pushes the old hair out, and then continues growing for a genetically determined amount of time. For body hair, it tends to grow for only 3-6 months and it grows at a slower rate. Then the follicle goes into a dormant stage again. Hair on the head grows at a fairly constant rate year round, and the hair shafts are generally thicker and stronger. Areas like the armpit, pubic area, and men's beards tend to be somewhere in between, as they do grow at a constant rate and can get fairly long if not trimmed.
203427
An adult has about five million hair follicles,far less than other mammals.  One fifth of this is on the head which also is  the longest hair on the human body. Hair can be found on the whole body except on the faces of the hands and the bottom of the feet.
319853
Some hairs are equipped with tiny muscles that can make them "stand on end" for example when a dog suddenly barks right behind you.  You get goose bumps when these muscles act together too erect hairs are too small to easily see like on your arm or leg.  Tiny hairs on the face must not be very muscular.
1172893
I don't know how your body is setup but most humans can see their necks. It's pretty normal for hair to grow on your chin and neck just like on your face. You just shave it too, I usually shave up instead of down like on my face, because it's best to go with the grain to avoid irritation and ingrown hairs.
651022
LOL, funny things what ya body does dont ya think!\nThe hair grows faster because the skin cells that react to the coldness of the atmosphere, then the hair cell inside the skin cell starts sprouting triggerd because of the nerves. The hair isnt is to keep your skin and nervous cells warm. \nHey and not just in antartica dude!\nI hope this helped you. \nKind Regards, Timothy H. (Age 12, W.A.)