Originally Posted by NeuroLogic

I also don't know whether heat is vascular or nerves. I'd done research on hot flashes, and even adipose fat (?) that acts insulation. (The heat seems to get trapped.)

I've done an experiment a few times where I put a cool pad along my spine while I'm trying to sleep. This has taken away the feeling of extreme heat. I got to sleep quickly.

I got the idea from an experiment I found online on dogs where it was determined when you cool their spines, they feel cooler.