I just woke up from one of these "episodes". I've had them for the last 4 years or so. Here's what I experience during my paralysis:
-Feeling of pressure: Sometimes I feel like someone is sitting of my legs or my chest. Other times, I feel as if someone is trying to pull me down through my mattress (as if that were possible) or pull me off my bed.
-Can't move at all, but CAN open my eyes....but I strain to keep them open. I consciously know it's a dream but when I feel my eyes are open, I try to look around and can't see anything. For example: I felt my paralysis while I was just sleeping on my side. When I opened my eyes, I was facing my wall--which is entirely mirrors, so I could see my whole body, my whole room--everything. But nothing abnormal was there.
-Try to jolt myself awake but usually takes me at least 30 seconds. Sometimes, I think I have jolted myself awake enough to actually stay awake but I fall back asleep. nI literally feel myself slipping back into the sleep and then the pressure and/or pulling begins again.
-I never hear any sounds or see anything when this is happening. I know that I can't actually talk when this is going on but my conscious is speaking to someone or something. I remember exactly what I said when I do wake up as well. When it first began I was 'saying' things like- "stop" or "get off me"... and within the passed month or so my conscious just started saying 'God still loves you even though you're doing this to me" or "You can keep trying, but God is going to protect me."---I've never been a super religous person or anything but suddenly I started saying things involving God and religion. When I mention God, the pressure gets harder. It's weird.
-When I completely wake up, I'm panicked and short of breath. I can recall second-by-second what happened during the ordeal (which is something I can't necessarily do when I have a normal dream).
Anyway, there has to be some underlying cause. I'm a pre-med student but haven't come across anyone else with problem at school. I then came across this forum and felt a bit of relief. I eat fairly healthy, take all the proper vitamins a person my age should need.....on the other hand, I honestly don't get that much sleep. It's the only thing I can think of that I may be deficient in--sleep.