So lately I had what I think is sleep paralysis. I was just lying there and suddenly my entire body was totally put under a huge amount of pressure. My teeth clenched and I could taste blood-- but none of this actually happened, since my teeth don't hurt in the least now.

What I want to know is how do I get it to happen again? Sometimes it just happens. This time my heart was beating really fast.

And how can I do anything from sleep paralysis? I can sometimes see little amoeba-like green things and I can feel like my torso is lifting up, but that's it. The sleep paralysis goes away from there.