What happens when your posture is poor.?

When you have a poor posture your spine suffers. How do You get a bad posture.?
You can get a bad posture from spending all day at a desk leaning over with shoulders bent forward or just from slumping in from of the tv or by walking and stabding incorrectly. Whatever way this has come about your spine will suffer. Just look at the picture to see what happens. By correcting your posture you can easily put inches back on your height. Maybe while your reading this your not sitting up straight in your chair. All this gives you a poor posture and costs you in height.