I occaisionally have what I think is sleep paralysis. It usually involves a nightmare where I am being attacked or dying, sometimes with a bad headache. I try to wake up and move but I can't. I've heard two schools of thought on this. One says try to use every effort to wake up. Another says, try to relax and you will be able to move again faster. Which should I do? They happen on average every other month. When they happen and I wake up in the middle of the night, half the time they happen again in the same night. That has made me afraid to go back to sleep after having one of these episodes.