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Your head, the radiator

Mom always says to wear a hat in the winter because you lose heat the fastest through your head. Mom is right, but do you know why? Lots of people think it's because heat rises, but that's not really the reason. Your head is crisscrossed with many blood vessels close to the surface, giving off heat like a radiator. Your body can lose heat rapidly if your head is not covered. By covering your head, you keep the heat radiating from your head close to your skin, which in turn keeps additional heat from...

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