I have had a lot of sleep paralysis and mostly i hear really high and kind of heavy sound, and somebody is standing next to me or at the door. Once i saw creature like Kayako Saeki (samara?) from The Grudge crawling towards me ( i've never seen the movie) and holy sh*t it was horrible , just looking at the thing in to its eyes and couldn't do anything..
After some time i googled it, and found out how it works (sleeping on your back and force your body to stay still, even if you have some itch or just have a feel to move your limbs) and how to stop it ( try to move your little finger )
So i was wondering, what kinds of paralysis others have had, how do/did they stop it and what kind of creatures have you seen in them?