Cayenne pepper reduces the stickyness of blood platelets. It has been used as an herbal treatment for bad circulation. Sprinkle some on your feet before sticking them in a very tight boot and in theory it should keep your feet warmer. Has anyone else heard this?
I know this seems like common sense, but be careful not to get it anywhere you dont want it. If you rub your eye, or take a piss afterwards and spread the pepper it will ruin your day for sure.