https://www.youtube.com/@TsodingDaily

If you’re a programmer, or think you might want to be one, I highly recommend this channel. He’s a savant at all sorts of low level things, quite funny and entertaining, and does a fantastic job of explaining what’s going on.

It’s not just a fat or muscle thing. Those both contribute of course; fat insulates and muscle produces more heat. But the real player is the surface area to volume ratio.

A bigger person has a lot more volume than they have a bigger surface area, and since heat is lost through the skin this has a major impact.

Get your bowels empty in the days leading up to it. So don’t eat. Anything. 2 days before you can relieve yourself start eating small amounts of protein.

Or, better yet, don’t even try to do this. You’re very unlikely to succeed and therefore your effort is going into preventing an inevitable situation rather than figuring out how to deal with the inevitable problem once it arrives.