What a fascinating discussion!
I have had small episodes of sleep paralysis for many years, though not enough to worry about; in the months before I started considering that I might have celiac, I was having them more often, and, since being gluten-free, they've been much less frequent (though it happened this morning -- maybe because I read this thread last night!). I thought I'd share my experience for comparison:
When it happens, I'm aware that I am awake and can open and close my eyes, but cannot move. This morning I tried moving my arm, and could feel it moving, but could also