Am I the only one that this happens to?

Sometimes when I wake up, I can't move. Or I can move imperfectly. I'll be awake and conscious inside my head, screaming at my body to forget getting up, just move my fingers properly, and they just won't. Sometimes I can't move at all, oftentimes I can kind of flop around -- like I'll be able to shift my arm a little bit, but forget fine motor control, and moving anything major is out of the question. Oftentimes I have some degree of control over my head -- I can turn my neck, but occasionally I have imperfect control over parts of my face, so I either can't open my eyes properly or it's a struggle to close my mouth. It doesn't happen often, but although it's been happening since I was about nine it still creeps me out every time. It lasts anywhere from ten or fifteen seconds to, on one memorable occasion, about a minute and a half. Usually what happens is I have to focus on the part of the body I can move, and make it move as much as I can, which will often increase slightly with time -- and then all of a sudden I'll manage to jerk it particularly far, and my control will come flooding back again all at once.

I wonder what this is?