Every day the appropriate amount of deep breathing is equivalent to do lung exercise, can exercise the respiratory muscle, enhance lung function, often adhere to prevent respiratory diseases, but also timely discharge of carbon dioxide, inhalation of more fresh air, can improve the elasticity of the trachea and alveoli, can make the oxygen content of the blood more, can improve the quality of oxygen required by the organs of the whole body, but also conducive to the function of the heart. Appropriate deep breathing can also improve the mood and relieve mental tension, usually when life and work stress can be done, there are great benefits, but also need to pay attention to if excessive deep breathing, also has a great impact on physical health, mainly will cause respiratory alkalosis.