If your lower back aches by mid-afternoon, tightens up the moment you stand from your desk, or nags at you after a long drive, you're far from alone. Lower back pain linked to prolonged sitting is one of the most common complaints we see, and one of the most fixable. The body is built to move, and when we spend hour after hour folded into a chair, it eventually lets us know. The good news is that this kind of pain usually responds well to the right combination of movement, ha