The first reason is that before strenuous activities, the body does not have enough heat to prepare for the activities, and during strenuous activities, the organs cannot supply the nutrients and oxygen needed for muscle activities in time, and spasms and contractions occur. The second reason is that when there is no physical activity for a long time or when the weather is too cold, people with poorer health will have low sodium chloride content in the body, which triggers forked breath, and is not a disease nor does it need to be treated, only that the patient needs to sit down properly to rest and breathe heavily to improve. If the situation does not improve, acupuncture can also be used to activate the qi and blood, and massage can also be used to improve the situation, to warm up well before exercise, to avoid the situation of bronchitis.