Detailed explanation of cow face action: stand facing forward, raise your right arm upward when inhaling, bend your arm, bend your left arm from below, and put your hands together to form cow face action. If you can't get close to your hands, you can push your hands to the middle of your spine, breathe slowly, retract your ribs and push them to your back. When inhaling, the upper elbow is lifted up and the lower elbow is opposite downward. Next, when inhaling, the hands are untied and the upright posture is restored.