Appropriate breath holding is beneficial to the body, but long-term breath holding may cause damage to the cardiopulmonary function, not conducive to physical and mental health. Holding your breath can increase lung capacity, exercise the human body’s cardiopulmonary function, appropriate force can exercise the elasticity of lung tissue, the respiratory muscles can also play a role in exercise, and will not produce significant harm to the human body. But often hold your breath for a long time on the human body may cause damage, increase the load on the lungs and heart, excessive breath holding can also lead to hypoxia, which can lead to a series of symptoms such as dizziness and chest tightness. In ordinary life, you can hold your breath to exercise your respiratory function, but you should master the time and frequency of holding your breath, so that holding your breath is beneficial to your health, to avoid harm to your health.