If you find yourself with high and low shoulders, don't cross your legs on your side. It should be actively corrected and treated. First, when you walk, you must hold your head high, walk straight, and raise your lower shoulders slightly. This is the most applicable and effective method. Second, pay attention to sitting posture. It is best to correct the seat at ordinary times, and don't tilt the seat, so as to ensure that the muscles on both sides relax at the same time and develop good habits. Third, practice standing posture at ordinary times. It's best to stand against the wall and make sure that every part behind you is attached to the wall.