I came across an interesting article online about how much important the way the soles of your shoes have worn out. Here are some points we should focus on. 1)Those who the outside of their heels in their shoes has worn out tend to put center of gravity on outside. That's why most of them have bowlegs. The best practice for this issue is to try to sustain the body by heel, the bases of your thumbs and ones of your pinkies. Turn your toes towards the front when walking and you should tone your inner thigh so that your center of gravity is stable. 2)Those who the inside has worn out tend to tile their pelvis forward and twist their knees. If you leave this kind of posture, you might be slouching and have a swayback. Sometimes it causes lower back pain. The best practice for this case is to keep your pelvis upright like you push your heel a bit when you stand up and tone your stomach. Stretching around your hip joint can align your center of gravity. 3)Those who has worn-out difference between right shoes and left ones have a sign of putting their center of gravity on either one side of their body. This can be caused by a sedentary job and a habit of having your bag on either one of your shoulders and hands. The first step to improve this feature is to try to stand with your weight evenly distributed over thumbs on both legs. The way the soles of your shoes are worn gradually from the outside of your heel towards the center is good. So, I want to make a point of walking with my weight evenly distributed over my legs sometime soon.