Chest pain after a fork in the road is caused by spasm of the respiratory muscles, including the diaphragm and intercostal respiratory muscles. The main reason is because of not warming up before strenuous activities, that is, not mobilizing all the muscles of the whole body, because during the activities, the skeletal muscles take the lead in the movement, which will consume most of the oxygen as well as the blood supply in the body, which will lead to transient obstacles in the oxygen and blood supply of the respiratory muscles, resulting in respiratory muscle spasms, which will lead to chest pain as well as pain and discomfort in the two sides of the subcostal area and the epigastric area. When pain is evident, rest should be taken immediately while breathing slowly, and try abdominal breathing as much as possible. At the same time, gently massage the painful location with your hand, you can gently tap the painful location, which can effectively relieve the respiratory muscle spasm.