Deep breathing has many benefits to the human body: first, the biggest benefit is to prevent and control respiratory diseases, such as common respiratory diseases such as chronic bronchitis, emphysema, asthma, pulmonary heart disease, chronic obstructive pulmonary disease, all because of the body’s respiratory ventilation function is insufficient, lung capacity is not enough to cause the occurrence of the above diseases. If you regularly exercise deep breathing, you will be able to increase the body’s lung capacity, and effectively increase the function of the heart and lungs, increase muscle contraction capacity, will relieve lung diseases. Second, deep breathing is conducive to the prevention of myocardial ischemia, deep breathing will make the coronary artery blood supply deficiency significantly reduced, will also significantly reduce the occurrence of coronary artery spasm due to ischemia. Third, deep breathing can also effectively prevent and control hypertension, because in the process of deep breathing fully exercise the function of the alveoli, will increase the amount of return blood, so that the heart’s afterload is reduced, will effectively prevent and control hypertension.