Ever had it happen to you? I've had it happen today and probably 5+ times in the last few years. It feels like "something" is physically preventing me from moving or talking. The most I can do is murmur. I usually see a shadowy figure. Either I can't make it out or it looks like a female.
Anyways, I usually break out of it after a couple seconds or a few minutes at most. Sometimes I go back to sleep after and other times I stay up. Had a bizarre nightmare last night before it occurred. Not particularly scary but the most fear I had was when I partially awoke into sleep paralysis.
Edit: Apparently, the amount I deal with it is normal and common for most people but for those who it happens to a lot, it might be an actually disorder that a doctor should look at.