Eat a lot of potassium and Nitrates. There is a rare disease where little random "burn track" lesions appear on the body's skin. Some victims say they can see a small "blue flame" light. when the lesion forms. It has something to do with Nitrates in the sweat, but little is known about it--as the condition is rare. The victims are usually elderly. (as with SHC victims) Also interesting that body parts unaffected by SHC cases, like feet, etc, are particularly low in number of sweat glands-------- I think there is a direct link here between this ailment and SHC. If the nitrate concentration of the skin is high enough, a small flame might set it off, like a cigarette, match flame, etc.------------Anybody remember making their own gunpowder as a kid and putting a small pile on a board, lighting it, and watching it burn a hole through it? likely a similar process---white heat in a very small place, and no other damage around it.