Correction of sagging chest: (1) bath massage. After washing your body with warm water, when your body is in a warm state, put your hands on the lower sides of your breasts and massage them upward from your armpits for about five minutes at a time. (2) chest gymnastics. Stand two meters away from the wall, stick your chest to the wall, raise your arms to shoulder height, and pull back to expand your chest. Pay attention to the chest to be straight, repeat ten times, strengthen the chest muscles, and avoid sagging chest.