I read this today in boingboing: The Nightmare of Sleep Paralysis and it hit close to home.

Sunday night, I had a strange series of dreams. In my dream, I was asleep and suffocating, but unable to wake up. Slowly, I would wake up, but I was still suffocating. I would try to reach out to Kym or scream out, thinking that if I woke her up, she could fully awaken me, but I was paralyzed and mute. I couldn’t make my body move, or make any sounds come from my mouth.

I had this dream three or four times that night, and after each episode, I would wake up, and not know if I was really awake or still asleep. Oh, and the part about it being terrifying… true, very so true.