Early times it was for warmth. It also serves to the protect the arm. It is also a sensing mechanism.
pilierector muscle
The age at which one starts puberty.
Well, it's all about how you feel.I have really thick, dark hairs on my arms. I was embarrassed at first but, I bleach it and everything's okay.
static electricity static electricity
yes, yes you can, it is very painful, it happened to my arm, eyebrow and toe
I have had these things when i started having puberty.
Growing armpit hair is a sign you have already started puberty.
it means that ur cold and ur skin is trying to make u warmer
You are born with hairs on your arms, these darken and grow longer & thicker when you go through puberty. The age of puberty varies from individual to individual, it is usually around 11 - 13 years old
No, and the muscle that controls the movement is the piloerector muscle. See piloerector which are smooth muscle (involuntary)
Standing hair is caused by the tiny muscle that connects the hair to the follicle. This muscle is called the arrector pili.
Yes. Some people do not have wet dreams at all and some do. Either way it is normal.