Lungs work throughout the day, but between 3:00 and 5:00 the lung meridian Qi is the most abundant. Lung main division respiration, as long as the body has breathing movement, the lungs will be in a working state, constantly inhaling clean air and discharging turbid air, playing the role of spitting out the old, regulating the role of qi, to ensure that the qi of the XuanDa and SuDi. And when the time period for the c time, that is, between 3:00 to 5:00, the lung meridian meridian gas is the most abundant, the lung function is more active, not only to regulate a body of qi and the operation of the blood, but also to regulate the infusion of fluids metabolism. In general, you should pay attention to appropriate exercise, reduce smoking and alcohol, and maintain a healthy lifestyle, which is very helpful to the health of the lungs. If you feel discomfort in the lungs, such as cough, chest pain, shortness of breath, etc., you should go to the hospital in a timely manner to make a clear diagnosis, and the doctor should formulate a scientific treatment plan, which should not be taken lightly, so as to avoid delays in the condition.