Stretching the abdomen is simple. First of all, you can lie on the yoga mat, keep your legs close to the yoga mat, and hold your upper body away from the yoga mat for 2~3 minutes with your hands. Second, you can lie on the yoga mat, exert strength on your back, stand up and think again. Every time you insist on 10~20 seconds, your back, waist and abdomen will feel very sour, and the stretching effect on the abdomen will be better.