I thought Sleep Paralysis was the key to lucid dreaming, where your body and muscles go to sleep but your brain stays awake?
Sleep Paralysis is a consequent. If I've researched correctly, a person must force themselves to believe they are asleep, and imagine pulling on a 'spiritual rope' to leave your body. Another method, I've heard, is to imagine seeing yourself from across the room. It could trigger you to rapidly leave the body due to the shock. I believe sleep paralysis can happen if the person tries to move as they're approaching OBE. The body would think the person's asleep and not respond to nerve signals. The brain, reacting the same, would produce the dream-like entities in real life. But, that's all subjective and theoretical, as I've never gone through OBE, but I have read fantastic stories from other people, such as a priest who went to heaven, and by the time he came back to his body, his body was buried under ground in a casket. People heard a bell ringing, and by the time the casket was lifted, he was dead for good, and there were scratch marks. Another fantastical story is a person going to other planets and being able to breathe; one person stating, as much, that he had seen life on Mars.