I wake up and I cant move. I can usually just cross one leg over my body and my back will pop but I've literally been forcing my leg farther than I should and nothing has happened. With my neck, I find myself daily massaging it. I get it to where I can move again and look both ways while crossing the street....and then I go to sleep. When I wake up - no more mobility. And I've tried the several different pillows Mosie has on his bed...I even fell asleep on the comfy couch. So I'm beginning to believe that it just has to do with me. And bobsledding I supposed does not help since you are being jerked around from side to side....hmm, something to consider.