This topic sounds like it should generate some interesting comments. Don’t let me down Freepers.
I saw some research 20 years ago stating that Eskimos had a much larger percentage of brown fat to white. It was thought that if you slept in an artificially cool room, over time you could change some of your white fat to brown, which actually burns calories. I asked if I could put my little brother in the freezer, as a test, but Mom always said “No”.