Out of Body Experiences
Many don't even believe that out of body experiences exist. It is believed (largely as superstition), that you have two personas. You have an astral self, which is your consciousness and being (your soul, as it were), and a physical self. Death, these same people believe, is when the astral body permanently separates from the physical body. This is supported by the fact that most out of body experiences supposedly happen during near-death unconsciousness. This separation of "soul from self" can sometimes be observed in normal dreams.
Now, before you go about swearing off sleep for fear of having an out of body experience, getting lost, and never returning to your body, please consider the following. All you have read thus far is rarely believed superstition, and is, though interesting, not scientific at all. Secondly, there has never been, nor will there ever be, and instance where you can have an out of body experience, decide your astral self wants to wander off, and die. It just doesn't happen.
Unlike lucid dreaming, if you have an out of body experience, you'll definitely know. Out of body experiences are usually said to start with a loud roar, like that of a train coming through a tunnel in your direction (because I think we all have been in that position before, right?).
Out of body experiences are very rare, and little is known about them. We suggest you attempt to remember exactly what happened, because out of body experiences are few and far between, and if you have one, despite being very unsettled, you will be a "lucky" person.
Dream Occurences
Out of Body Experiences