"The world would be a better place if everyone grew brains." - Humble Master
Question #1297 posted on 11/06/2003 4:02 a.m.

Dear 100 Hour Board,

When one "bundles up" (or "rugs up" if you are an Aussie), why does it only involve the torso area and head? When I bundle up, I just put on a coat and maybe gloves and it is sufficient to keep me warm, even though I did nothing to my ankles, calves, knees or thighs. They are only protected by the same jeans I would wear in warmer weather.
Why aren't they freezing?

- Ice Cube (the object, not the rapper)

A: Dear Icy Hot:

Your head and torso are the two biggest sources of heat loss in your body. So by wrapping them up, you prevent most of your heat loss, and thus feel quite a bit warmer. Your body will decrease blood flow to your extremities as they get colder, so you wear gloves and boots not so much to conserve total body heat, but to keep those parts warm enough so that blood still flows through them, preventing frostbite.

-- Misaneroth