Take some time to consider whether or not you are sleeping in the correct position. Don't you have a proper sleeping position? Learn how to straighten your back while sleeping.
Have you ever wondered where that pain in your ankle came from after a long drive or the throbbing low back pain from siting all day. Chances are there is nothing structurally wrong with your joints or vertabrae - they are simply out of alignment. When any part of your body is out of alignment as you function normally by walking, sitting or standing it is more prone to aches and pains because muscles and connective tissue are forced to work mechanically in directions they weren't designed. It may not be any more complicated than that, so don't over complicate it. Fix your posture FIRST considering pain pills, specialized treatments or surgery. The BODY-ALINE posture exercise machine is a great way to do it.