This was a new one for me. I was away at the weekend and really wasn't sleeping very well in the hotel room. Not long after I fell asleep, I woke up again. At least, my mind woke up, but my body didn't. It was quite terrifying. I thought there was someone in the room next to me (besides my friend) as I could hear a kind of grunting/panting coming from right beside me. I couldn't move and was trying to call out my friends name for help, but I couldn't speak either. It didn't last very long, thankfully! I've been reading up on it here:
Anyone else experience this? I hope it never happens again!