Healthy breathing should be abdominal breathing, because there are digestive system, hematopoietic system, reproductive system, urinary system, endocrine system, lymphatic system, and a large number of blood vessels and nerves in the abdominal cavity. Due to the regular increase and decrease of abdominal pressure, the activities of internal organs in abdominal cavity are strengthened, thus improving the blood circulation of digestive tract, promoting the digestion and absorption function of digestive tract, promoting intestinal peristalsis, preventing constipation, accelerating the discharge of toxins, reducing self-poisoning and achieving the purpose of delaying aging.

Abdominal deep breathing is easy to learn, standing, standing, sitting and lying down, especially lying in bed. Lie on your back in bed, loosen your belt, relax your limbs, concentrate, eliminate distractions, inhale slowly through your nose, tuck in, exhale slowly, tuck in. Take a deep breath gently, evenly and for a long time. You can put your left and right hands on the upper abdomen and chest respectively, which is convenient for observing the movement of the chest and abdomen. When breathing, the abdomen is inward and outward, and the chest keeps the minimum range of motion. It is best to observe the chest, shoulders and neck, and do not move or fret.