The stretching of these two parts is relatively simple. For abdominal stretching, you can choose prone position, support your upper body with your hands, keep your lower limbs close to the ground, inhale, inflate and exhale, contract your abdomen and relax your rectus abdominis, and adopt a standing posture at your waist. When stretching the left side, the left hand is raised close to the left ear, the right hand naturally droops and leans to the right side to keep the pelvis stable, and the right hand slowly descends to stretch the right side.