system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: why does alcohol make me feel warmer?

Instead of putting a jacket on I'll take a few shots or "alcohol blankets" to keep warm...why does this work?!
gpt
It expands your blood vessels (vasodilation), allowing more blood to flow to your arms, legs and face, transferring heat from your body core.  Using alcohol to "warm up" *very* cold people is dangerous; it's better to lose a few fingers to frostbite than to die of hypothermia.