The most common cause for back pain that Chris Leib, a doctor of physical therapy at Movement Professional, sees is not varying body movements enough. “The body gets very imbalanced,” he adds. If you’re sitting all day, the muscles in the front get short and the muscles in the back get long. Stand up and bend your back backwards as often as possible. Another exercise is to sit in a chair, put your hand behind your head and open your elbows. “This is a great counter-balance movement,” he adds.