It would be bad enough if you were just paralyzed for a few minutes, but most of us know that's not usually the case. Strange sounds, sensations, floating......it's all bad enough. But then come the "sleep paralysis demons" as so many of us have heard about. Old hags with a penchant for strangling, and lurking, unnaturally tall and thin shadow men are the most common but definitely not the limit of the horror. And the worst of all? We still don't know why we see what we do...