2006-12-07 20:18:28 · 4 answers · asked by ginger 4 in Health ➔ Diseases & Conditions ➔ Skin Conditions
When you're cold, the hairs on your body erect to trap heat against the skin. This causes the goose bumps. Take hold of a few hairs on your arm and pull up (gently.) You'll see a little bump on the skin where the hair is standing up.
2006-12-07 21:47:16 · answer #1 · answered by Jason 3 · 0⤊ 0⤋
According to my study of biology, its because when you get cold, the muscles connected to your hair in your arms contract to make the hair more straight, to trap heat in between them. Although this isn't very effective in humans, it is very effective in hairy mammals. However, I'm not really sure of this
2006-12-08 04:23:59 · answer #2 · answered by amr m 1 · 0⤊ 0⤋
It's trying to expand the skin thicker to hold more heat? $#!+, I don't know!
2006-12-08 04:19:52 · answer #3 · answered by Tom Foolery 3 · 0⤊ 1⤋
it expands and closes pores to conserve heat.
2006-12-08 05:28:07 · answer #4 · answered by Ray 6 1 · 0⤊ 0⤋