How should you breathe during a normal delivery?

Patient's question:

No

Doctor's answer:

Keep the chest naturally upright, slightly press the lips together, and let the tongue rest. Before inhaling, exhale the remaining air in the lungs. As you inhale through the nose, raise both arms forward in parallel. The speed of raising the arms should be the same as the speed of inhaling. When inhalation stops, the arms should reach the highest point above the head. During exhalation, lower both arms slowly to the sides of the body at the same speed as the airflow. When exhalation stops, the arms should be fully lowered to the sides of the body.
For beginners, the speed of inhalation and exhalation should be the same, and you can start with a slower pace. As you progress in training, try to inhale as quickly and deeply as possible, while exhaling should be slow, steady, and powerful. The duration of exhalation should be longer. Avoid any friction sounds during both inhalation and exhalation.