Part of the "Myth Busting" series
Everyone knows what good posture is, right? When you're sitting in a chair you have a neutral pelvis, a straight back, shoulders back and chin tucked in. You brace your core. You NEVER cross your legs. You have your arms and elbows at 90 degrees to your chest. Ta da! That's it. Perfect posture. Now you just need monitor at eye height and a yoga ball or a special orthopaedic chair to sit on so you can hold that posture. All day.
After all, bad posture is the main cause of back pain, isn't it? Sitting slouched in a chair with your shoulders slumped forward causes muscle imbalances, and muscle imbalances cause pain - right?