why do i get goosebumps when im feeling cold or when im feeling something scary?

Answer 1

Normally, you shiver when you feel cold, but fever, illness, or other harsh conditions can also set off the shivers. When you shiver, your muscles contract and relax quickly, causing uncontrollable quivering all over your body. In the case of a reaction to the cold, a drop in skin and body temperature will signal the hypothalamus. Once activated, this part of the brain will stimulate muscle contractions (the shivering reflex) in order to warm up your body. After enough heat has been produced, the shivering stops.

Goosebumps are caused by the pilomotor reflex. When you're exposed to cold temperatures or emotional stimuli, or if your skin's irritated, this reflex triggers an involuntary muscle contraction that raises the hairs of your skin, producing goosebumps. The response to cold, known as piloerection, helps keep air near the skin, thereby retaining heat for the body.

Answer 2

A vestigial mammalian response to thermal stress or fear.

In our hairy mammalian kin fluffing up the hair traps a warm layer of air against the skin to insulate from the cold. Making the hair stand up makes them look bigger and more intimidating.

A lack of full body hair was advantageous to our distant ancestors so we aren't very hairy, the hair raising response wasn't disadvantageous and so has never been eliminated.

Answer 3

You must have seen cats make themselves look bigger by making thier fur stand. They do it to scare off other animals or just to be warmer wwhen its cold. Our body reacts in the same way since we used to have hair all over our body a long time ago too. Now thanks to eveloution we dont have hair anymore but our skin still tries to make what little hair we have left stand up. Mabye after a few thousand years we wont have goosebumps anymore since we dont need them. :)

Answer 4

Goose bumps are caused by your body trying to warm itself.. The contraction of the skin draws blood to the surface to warm the tissue.

Answer 5

A vestige of the past, before evolution is why.

Answer 6

because your normal.