Quote BBC “The scalp contains lots of blood vessels that sit particularly close to the surface of the skin – as evidenced by the copious bleeding that happens when you cut your head. If you are dressed in warm clothes without a hat on a freezing day, the environment cools the hot blood flowing from your warm body as it passes through the scalp. And this blood then travels back down to the warm body, cooling it as it goes.”
Basically it aint a bad idea to wear a warm hat in the winter. Check out the latest selection of beanies to keep that head and body warm!