Here is a fun idea that can increase your health with very little effort on your own part. Replace that office chair with an exercise ball. It is refreshing and enjoyable.
You will find several advantages when you replace your chair with a ball. One of the best is that replacing the chair forces the spine into proper alignment. Since the big ball lacks stability, you are going to have to keep your own body in balance. The body will naturally assume perfect posture as this makes balance easier. The result is a healthier spine and less pain in the back.
With the ball in place of your chair, you will also be forced to change your sitting position in order to keep your balance. This movement keeps you from damaging your body by remaining in one place all day long.