when I was a child, I experienced sleep paralysis for the first time. If anyone else has been through it before, you know the horribly terrifying feeling. this is my take on it.
edit: You wake up, but you canít move a muscle. Lying in bed, youíre totally conscious, and you realize that strange things are happening. Thereís a crushing weight on your chest thatís humanoid. And itís evil. You might have even felt afraid but could not call for help. This condition is called sleep paralysis. Sleep paralysis may leave you feeling frightened, especially if you also see or hear things that aren't really there. Sleep paralysis may happen only once, or you may have it frequently -- even several times a night.