This is interesting. Scientists have identified the part of the bain which triggers out of the body experiences. I used to have them all the time..sometimes even seeing demons and the like when I was floating above my body. It was quite scary actually - until I drew an imaginary pentagram around my bed for protection from evil spirits....that did the job, so now I look forward to the experience whenever it happens. Still, it's comforting to know it's all a hallucination anyway. I prefer not having any superstitions....