Should you wear a hat in cold weather?

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Have you ever been told that you lose most of your body heat through your head? How true is this, and does it mean hat-wearing in winter is essential for your survival?

Useful resources:

1957 study on heat-loss from heads: Gerald Froese and Alan Burton (1957) Heat Losses from the Human head. J. Appl. Physiol 10:235-241.

Rachel Vreeman (2008) Festive medical Myths. British medical Journal. [Highly sited source debunking the 70% myth]

Ian Sample (2008) Scientists debunk the myth that you lose most heat through your head. Guardian Newspaper.

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