1, stick to the heel of the wall, tighten the hip muscles, hold out your chest, suck in the abdominal muscles, inhale through your chest, lean forward at your waist, and stretch your shoulders back a little bit to train this mirror.

2. As long as your hand is free, bend your elbow 90 degrees and put it on your back, so that your left hand can grasp your right elbow and your right hand can grasp your left elbow! In this way, you can't bend over! Just stick to it for a while and wait until your hands are empty! You can get into the habit of holding your head high!