I have an odd case of Sleep paralysis. It only happens when I'm at my cottage around the first week and it never happens again until I'm back . I've had it happen to me twice. The first time was really scary just because of the hallucination of the "monster" thing. I've also heard about it sorta being like a rape and that what my first experience was. It was like some shadowy(sp) figure holding me down. It only happen for a few seconds then I gained control and it ended. The second time I just couldn't move, then I got a jolt like a vibration. I don't know, I know nothing bad happens I still get a little scared when It does happen.