Why do you get goosebumps when it is cold?

In: Skin Care, Human Anatomy [Recategorize]

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In layman's terms, when you're cold, the body tries to make a thicker layer of trapped air around your body to hold your body heat. The body does this by causing the hairs on your body to stand up and create this body heat trap. It probably worked better when we humans had more hair. Erector pillae, also called arrector pili, are the muscles that contract to cause your hair to stand up or "goose bumps."

It helps your hairs stand up on your skin so that the hair will make your body warmer.

First answer by ID1262146413. Last edit by Mem05. Contributor trust: 0 [recommend contributor]. Question popularity: 32 [recommend question]

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