I think there is something to that...I slathered that cayenne pepper pain relief cream (Capsacian?) all over my legs and levitated. Couldn't even wash it off...burned like fire ants for hours. But many use it for arthritis pain and I guess if you keep using it, it works. I personally could not get past the first dose.
Don't EVER put ground Cayenne pepper in a pie instead of cinnamon.