system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How come parts of the body like your hands get colder significantly quicker then parts like your head?

Just coming in the house, hands are freezing yet face is warm, eli5 pls.
gpt
So your body wants to conserve heat.  When it's cold is does this by not sending as much blood to things that aren't 100% needed in that moment.  This is because blood near the skin will lose heat faster than blood inside your core.

However, your head has a lot of important organs in it.  Your brain, your eyes and these always need a good supply of blood.  Your arms, fingers, ears, etc don't need a constantly supply of blood when it's cold.