The main reason of shoulder slip is the muscles (such as deltoid, pectoralis major, latissimus dorsi, trapezius, etc.) attached to the shoulder clavicle and scapula. ) hypoplasia and weakness make the distal clavicle and scapula droop, thus forming shoulder slip deformity. The training method of self-correction is: side lift. Spread your feet shoulder-width apart, hold dumbbells or heavy objects hanging on your sides with your fists, and look forward. Inhale immediately, hold the bell to both sides until the arm is shoulder height, and then pause (when holding the bell, it should be slightly bent for 3 ~ 4 seconds). Exhale again, hold down the bell and slowly put it down, returning to your side. Repeat 10 ~ 12 times and practice 4 groups. Hands up. Open your feet, shoulder width apart, hold a barbell or dumbbell with the back of your hand forward and hang it in front of your legs. The distance between the two hands is shoulder width. Inhale immediately, hold the bell with straight arm in front of you to shoulder height, and pause for 2 ~ 3 seconds. Exhale again and slowly lower your straight arm to recover. When lifting the bell with a straight arm, don't bend your elbow, and the upper body is not allowed to swing back and forth to help. Repeat 10 ~ 12 times and practice 4 groups. Stand upright and lift horizontally. Open your feet, slightly wider than your shoulders, lean forward, keep your upper body parallel to the ground, and keep your back. Straight, head slightly raised, legs naturally straight, body center of gravity falls on the vertical line of heel. Put your fist forward and hang the bell in front of your leg. Inhale immediately, hold the bell to both sides to shoulder height, and pause for 2 ~ 3 seconds (elbow slightly bends when holding the bell). Exhale again, hold the bell and put it down slowly, and return to the posture of drooping arms. When lifting or lowering the bell to reset, the upper body is not allowed to swing up and down to help. Repeat 10 ~ 12 times and practice 4 groups. Sit in front of your neck. Sitting posture: put the barbell on the chest (clavicle fossa) with both hands, with a wide grip distance, and keep the upper body in a posture of chest, abdomen and waist. Inhale immediately, hold the bell and push it up vertically until your arms are completely straight, and pause for 2 ~ 3 seconds. Exhale again and slowly put down the reduction. Repeat 10 ~ 12 times and practice 4 groups.