Deep breathing and exhaling slowly is good for the exercise of lung function and is good for the body. Deep breathing as much as possible to let the lung volume, alveolar expansion, inhale a large amount of fresh air, so that the full exchange of oxygen and carbon dioxide, slowly exhale, so that the lungs as much as possible to discharge the exhaust gas, increase lung ventilation, lung gas exchange function, improve the metabolic capacity of the lung tissue, purify the lung tissue, the prevention as well as the recovery of lung tissue diseases have certain benefits. Lung gas exchange, sufficient oxygen by oxygenation, through the blood circulation, to reach the whole body organs and tissues, to ensure the healthy functioning of the organism, to improve the body’s immunity to help, but also exercise the function of the respiratory muscles. In addition to life, work pressure table is larger, you can also through deep breathing slowly exhale to relax, relieve mental stress as well as sleep is also beneficial.