There's a poorly written article about a book on the subject on wikipedia:
http://en.wikipedia.org/wiki/The_Entrancing_Flame
[QUOTE]Heymer suggests that a psychosomatic process in such emotionally-distressed people can trigger off a chain reaction by freeing hydrogen and oxygen within the body and setting off a chain reaction of mitochondrial explosions.[/QUOTE]
The idea that bursting into flames is psychosomatic is hilarious. Also
[QUOTE]George I. Mott (November 20, 1966 – March 1986) was a firefighter who burned to death in his home outside Crown Point, New York, in 1986. He is often cited as an example of spontaneous human combustion[/QUOTE]
The fire came back to claim him!!