Why Do We Feel ‘Cold’ When We Are Sick?

When we are sick, our bodies work really hard to fight germs. This uses up a lot of energy and makes us feel cold, just like when you run around and get tired. Your body might even shake a little, that’s called shivering, because it is trying to make you warmer.

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Examples

You’re lying in bed with a sore throat and suddenly feel like you're outside in the snow.
Your little brother has a fever but starts shivering even though he's wrapped in blankets.
You have the flu, and it feels like your whole body is going through a cold snap.

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Categories: Health · body temperature,immune response,symptoms