Pay more attention to wear flat shoes or anti-heel shoes for exercise. K shoes are posture correction. Heel shoes are the content of college textbooks, and they have invention patents, which is an amazing scientific and technological progress. Like the principle of ballet training, the center of gravity is forced to move back to the heel correction posture. Heel shoes have a simulated experience. With a two-centimeter-thick book, you can simulate the posture correction of negative heel shoes by stepping on the book with your feet and touching the ground with your heels, and you can also try to do it right when sleeping. It doesn't matter if you don't straighten your arm at first. The longer you keep them, the better. The original stretching can effectively correct the posture of neck, shoulder and back, and has a significant effect on cervical spondylosis and hunchback, obviously optimizing the neck and shoulder lines and lengthening the neck. You can stand with your back against the wall at ordinary times.