Use this move to improve your posture. If you sit in front of keyboard all day, you should start doing an exercise called the wall slide immediately. Why? Because it helps undo the damage caused by slumping forward all day. After all, a hunched posture can leave you with the rounded shoulders look of a caveman. Worse, it can also lead to neck, shoulder, and back pain. So use the wall slide to beat back bad posture for good. In fact, for best results, do this exercise up to three times a day.