Why do we get goosebumps ??
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The body hair of all mammals automatically stands up when cold, creating a fluffy layer of warmth. When we're cold, the muscles around the hair follicles contract – a reflex left over from when our ancestors had long body hair. But since we don't have much body hair, all we see are the goose bumps on our skin.
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When we're cold, the muscles around the hair follicles contract – a reflex left over from when our ancestors had long body hair.
Explanation:
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