system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why does eating something hot (like a ghost pepper) make humans actually produce heat?

Why does eating something very spicy make humans actually give off heat?  

Example:  When I eat something like ghost pepper based hot sauce, I radiate heat off the top of my head.
gpt
You're not radiating heat. Not in the way you think.

Capsaicin is causing an inflammatory reaction in your body, starting with your mouth. Blood is rushing to that area. *That* heats up the area, not the peppers. But your overall body temperature didn't really change. You're just perceiving your normal temperature in a different way than before.