eli5 When I’m in bed on a cold night, if I put my arm out of the covers it quickly gets really cold and uncomfortable. However, my head is out of the covers all night, resting on a pillow, and doesn’t get cold at all. Why?
In: 49
[deleted]
Good question. My friend is bald, and he actually complains about his head getting cold, so he wears anything that cover his head instead.
Now, I supposed it’s more about exposed areas
Your face is warmed by the blood flow underneath it. It cools but at a rate the underlying blood flow CAN keep up with.
An arm cools by blood flow that is slower when resting. When active, plenty of blood flow to stay warm.
Your face is warmed by the blood flow underneath it. It cools but at a rate the underlying blood flow CAN keep up with.
An arm cools by blood flow that is slower when resting. When active, plenty of blood flow to stay warm.
Latest Answers