Thoracic breathing is also known as rib breathing and transverse breathing. This breathing method relies solely on the lateral expansion of the rib cage to inhale, using the external intercostal muscles to lift the rib cage to expand the thorax. Its even, when inhaling, both shoulders up, breath inhalation shallow, so also known as shoulder breathing, clavicular breathing or high chest breathing method. From the process of respiratory movement, it can be seen that the respiratory movement mainly relies on the stretching and contraction of two parts of the respiratory muscles to complete, which are expressed as the activities of the two parts of the chest and abdomen. One is the contraction of the intercostal muscles causing the movement of the ribs and sternum, causing the front and back, left and right diameter of the thorax to increase, showing mainly thoracic activities; one is the contraction of the diaphragm, so that the upper and lower diameter of the thorax increases, showing mainly abdominal activities. During inspiration, the diaphragm contracted, the elevated part of the diaphragm descended, and the upper abdominal organs such as the liver and spleen descended, so the anterior abdominal wall protruded outward; during exhalation, the opposite happened, and the anterior abdominal wall was reset inward. The respiratory movement based on the activity of the ribs and sternum is called thoracic breathing; the respiratory movement based on the movement of the diaphragm is called abdominal breathing. During thoracic breathing, only the upper half of the alveoli of the lungs are working, while the alveoli of the middle and lower lobes, which account for four-fifths of the lungs, are “resting”. In this way, over the years, the lower and middle lung lobes do not get exercise, long-term waste, easy to make the lung lobe aging, elasticity decreases, poor respiratory function, can not get enough oxygen to meet the needs of the tissues and organs for oxygen, affecting the metabolism of the body, the body resistance decreases, prone to respiratory diseases, especially in the autumn and winter, the elderly even feel wind and cold prone to pneumonia. The degenerative diseases of the lungs mostly invade the middle and lower lung lobes of the elderly, which is closely related to the long-term disuse of the middle and lower lung lobes caused by chest breathing. Therefore, chest breathing is not conducive to the health of the lungs.