In our life we spent a lot of time sitting on a chair. That is during our study in school or college, and later on when we work in office, we spent a lot of time sitting on a chair. Especially nowadays most people work with computer on a desk. A lot of people suffer back pain as a result, because most people sitting on chair in incorrect posture. This back pain can be easily prevented by maintaining good posture all of the time when sitting. This picture illustrates the correct sitting posture. Remember maintaining good posture is good for your overall health, not just to avoid back pain.

Infographic by correct sitting posture on computer desk