Where you absolutely know you’re awake but you cannot move? I’ve had this very often over the years but I don’t know if you’re asleep and dreaming that you’re awake or what is going on. Hubby had this once a few months back and says he never had it before. It’s a very uncomfortable and disconcerting feeling. BTW, it almost always happens when I’m very infrequently napping or sleeping somewhere that I’m not accustomed to.