If the outside of your sole is badly worn, it may be the character inside. Often walking in this posture, it is easy to concentrate excessive pressure on the outside of the foot, increase its contact with the ground, and increase the pressure on the ankle (huái) and knee joint. After a long time, the leg bones are easy to deform and form an "O-shaped" leg.
When people walk, the seven meridians and eight veins of the whole body move together, and the walking posture of bending over and holding out the chest will make these meridians not relax well, thus affecting the normal blood supply to the brain. At the same time, the spinal problems caused by these walking postures will be reflected in the brain, making the brain in a state of tension at all times, leading to excessive use of the brain and affecting sleep at night.