Pourquoi Human Body

Why do we get goose-bumps?

We cannot really do much to prevent goose-bumps: they are usually a reaction to the cold.
Each hair proceeds to pull at a little muscle, and as it contracts it will provokes the readjustment of the fur, in a process called horripilation.
When the hairs are standing on end, they imprison between them a large quantity of warm air (like a cushion) which allows the body to protect itself from the cold.
It must be said that this reaction was more useful in the prehistoric age, with the significantly well developed states of human hairiness...

Question submitted by: Wonder-Why.com
Answer submitted by: Wonder-Why.com




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