Belly rolling requires high flexibility of the waist. Before doing belly roll, you can exercise your muscles and twist your lower back. After lying flat on the yoga mat, the waist and abdomen should be forced, and the thighs should be curled up close to the thighs. When you lean back, you should use the strength of your waist to fall slowly. When you fall, don't touch the ground with your shoulders and keep your abdomen contracted. Like a spring, rely on the strength of the waist to repeatedly do leg curve waist upward movement. When doing belly roll, the speed must be controlled comfortably, not too fast, especially easy to strain the ligament. Doing belly roll can quickly exercise abdominal muscles, especially fitness friends can choose to do belly roll to exercise waist muscles and consume excess fat at the waist to practice six to eight abdominal muscles. Doing belly roll can also exercise people's muscle coordination ability. When doing the action of rolling abdomen and lumbago, stop the high-intensity exercise immediately, and then exercise after adjustment, so as not to strain the bones and muscles.