How to wake up?

If the body is at a certain level of alertness and awareness you will see that once it is well rested, it will awake - that is, if it is eager to come to life. If it is somehow trying to use the bed as a grave, then it is a problem. Keep the body in such a way that it is not longing to avoid or escape life. Maintain it in such a way that it is longing to come awake.