Ok, so I'm a psychology major and I know that during part of your sleep your body makes this chemical that makes it where you can't move, that way you don't get up while your dreaming. people who don't make it sometimes sleep walk. Well in the last few years I've been waking up sometimes and my mind will be partly conscious, but as hard as I try I won't be able to move, sometimes as long as a few minutes. the scary thing is, sometimes i'll wake up face down on my pillow and it feels like i'm smothering myself, but i can't move away from it. anyone know what's going on?