Many of us suffer with back pain at some time in our lives. Sitting in front of a computer all day, driving for long periods, carrying heavy bags and slouching on the sofa can all contribute to bad posture. Our posture often has a part to play in the state of our backs, and other parts of the body. But what is the best way to improve our posture? Are our parents and teachers correct to tell us to stand up straight? What exercises can help? If you suffer from back, neck or leg pain or sciatica, what is the best way to alleviate the pain? On this edition of Check Up, Barbara Myers puts questions about posture to Dr Peter Skew, a GP who specialises in treating back pain.