I fell asleep in a chair, upon waking up, the back of my neck was pinched backwards with my head leaning back and down. There was now head rest on back of chair.
Looking out around the room everything was normal, but when I looked down by my feet,while still sitting in same chair, a small area of the carpet was jiggling, or small waves. after a few minutes, it cleared up.
Would my head and neck being stretched way back-uncomfortably-have something to do with this?