The most common posture problems that have been concerned about, such as round shoulders, chest, hunchback, X legs and O legs, are the simplest ideas, that is, holding your head up and your knees pointing to your toes, and changing from the root of your living habits. An hour's fitness can't change the bad habit you have kept for more than ten or twenty years. People who have practiced for several years or even more than ten years feel that they have been "learning" and practicing very generally. On the contrary, people who practice for a few months tend to swell up and always feel that they have left Xiaobai, but in fact, they are still far behind.