Sanity is a default
Just to play Devil's advocate here... You're talking about the physicality of the phenemenon, and that has nothing to say about what is happening in the consciousness of the person. That's a whole nother can of worms. It's the whole Connectivism argument in philosophy.Why let someone think it's paranormal when it isn't? It's an actual, proven sleep disorder that was responsible for the reports of the incubus and succubus. Why be part of a forum when you can't comment on something though?
It's something that is a certainty, so I felt like I was justified in saying something.
Have you ever read the Yogis talking about Dream Yoga? Not that I buy into it, but it's the so-called spiritual science behind what we Westerners refer to as Sleep Paralysis, in some cases, and Lucid Dreaming in others. Long story short, we humans (as they suggest) gain access to the Astral plane through sleep. Of course, if you believe we are Meatbots, this little exercise is all in vain.