My only occasion of sleep paralysis was when I first moved into an apartment, and I had a wall seperator (see through) from the living room to the dining room. I was in the dining room since I hadnt set everything up and I saw this shadowy figure go around with what seemed like a scythe or a long sword clutched, and he was walking so fucking slow but menacingly and it was freaky as hell. Normally, this has happened to me before, I've had a few people break in my house before, and I'm not really frightened by anything. I tried to get up because I thought I was awake, but I couldn't and by then I thought they drugged me or something cause I was slurring my speech. And by the time he turned the corner that's when I woke up and turned into a ninja and started fucking up absolutely nothing.
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Zenland. I also hear that sleep paralysis is due to interrupted REM