Why Do We Shiver When It's Cold?

Shivering is when your body moves quickly to warm up. Imagine it's a cold morning, and you're outside without a coat, suddenly, your whole body starts shaking like a dog after it gets out of the water! Your muscles move fast, even if you don’t want them to, and that makes heat inside your body. It’s like when you run in place on a chilly day, it helps you stay warm.

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Examples

  1. Your body shakes fast when you're outside on a cold day, like when you forget your jacket at school.
  2. You start to shiver after sitting on the floor in a chilly room because your legs get colder than your body expects.
  3. When you walk into a freezer without sleeves on, your arms shiver to keep you warm.

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