In the process of running down, try to make your chest touch the ground, but try to bend your back slightly and keep your arms tense. Don't exhale when your body is not at its peak. In addition, the more difficult part lies in exhaling and resting when close to the ground. Then, inhale and bend your back, and then return to the initial state (kneeling posture). If it is difficult for you to contract your abdominal chakra to support yourself, keep trying to stretch your arms forward and remain passive, or you can only do half abdominal chakras. Finally, you can skillfully repeat this abdominal wheel movement. Until one day, you may be able to stand with your legs straight and your knees off the ground, and complete the abdominal training.