When you walk or bend and straighten your back, your pelvis moves as a whole. You can feel your pelvis move if you sit in a chair and place your hands over the top of your pelvis bones and then arch and relax your back. This is also an exercise that you can do to help good posture when either sitting or standing. Elvis Presley was extremely good at this exercise!

Good posture

Ideally you should think about good posture in every thing that you do, but the good news is that it becomes natural to stand or sit correctly and it then feels wrong to stand or sit incorrectly. Good posture will also help prevent an aching back.

How to keep good posture