The Sleep-Wake CycleWhen we sleep, we naturally try to find the most comfortable position - this includes using our headrests to support and balance our heads.To achieve balance, our neck extensor muscles instinctively compress the neck padding to reduce forward displacement, requiring a continuous physical exertion by our necks.As we began to drift into sleep, our neck muscles begin to relax. When this happens, our pillow begins to push our neck and heads forward, resulting in our heads falling forward once again.We wake. And the cycle starts all over.