Sleep paralysis can be incredibly terrifying. Its so horrible because when it's happening you don't realize anything that is going on isn't real. It can last what seems like only ten minutes or what seems like ten hours. My last experience I remember waking up to a horrible, distinctly non-human voice telling me I was going to die. I freaked out and when I tried to get out of bed and turn on the lights it felt like Josh Barnett was holding me down. I opened my eyes and saw a terrible face looking down at me with a grin. I tried to scream and I was able to open my mouth but no sound would come out. It was absolutely terrible. I shut my eyes and kept fighting and fighting and eventually the weight disappeared and I flipped the lights on and there was nothing there.