system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do you get extremely hot right before freezing to death?

Apparently you feel so hot immediately before you freeze to death that many victims take off all of their clothes. Can someone ELI5?
gpt
When you are cold, the blood vessels near the surface of your body constrict, reducing the amount of warm blood exposed to the cold and limiting heat loss.  Your body can only keep that up for so long, and when it finally gives up, the warm blood comes rushing back to the skin, giving the illusion of being too hot.