People have tried to explain these mysterious deaths in various ways. Some have said that SHC can be set off by a buildup of electricity or gases within the body. The most reasonable explanation seems to be the"wick" or"candle" theory. This says that, under certain circumstances, the human body can function as sort of an inside-out candle. That is, the fabric in a person's clothing acts like the wick, and the fat in a person's body like nearby source could set off a small fire and the burning clothes would cause a person's body fat to melt, addin fuel to the fire. In a poorly ventilated room, the body can burn for hours and cause the kind of damage seen in many of the supposed SHC cases. In this scenario, combustion is not pontaneous" at all and is always caused by some external fire source