eli5: Why is covering your ears in the cold so important for not getting sick?

Question

eli5: Why is covering your ears in the cold so important for not getting sick?

In: Biology

Answer 1

Covering your ears won’t keep you from getting sick.

But our extremities, including our ears, are the most prone to getting frostbite or otherwise getting too cold. They are small, have kinda poor circulation, and lots of surface area.

Also it’s just more comfortable to not have really cold ears? You don’t need a reason to wear a hat beyond comfort.