I've something similar to this happen to me! I'll be sleeping and then wakeup - but not really be awake. I can hear everything around me and my mind is awake and alert, but I can't move my body. It's what I imagine being in a coma is like. It's as though my mind has been rested, but my body is still too exhausted to move. I'll start to panic and feel like I'm moving a part of my body, but still can't wakeup...until I finally gasp for air and wakeup.Does this make sense to anyone else?