Chest pain after exercise may be caused by inappropriate underwear, muscle strain, angina and other factors. 1. Unsuitable underwear: if the female patient, wearing underwear of inappropriate size, may lead to the mammary glands in the process of exercise to produce violent vibration, repeated strain on the mammary glands may cause pain symptoms, after resting for a period of time to be able to alleviate. 2. Muscle strain: If you haven’t played sports for a long time and haven’t warmed up sufficiently before sports, your chest muscles may be strained in the course of strenuous sports, which may lead to chest pain after sports. 3. Angina: If the patient has a more serious problem of coronary artery stenosis, the heart’s oxygen consumption greatly increases during strenuous exercise, which may lead to myocardial ischemia, thus inducing angina pectoris, which manifests itself as chest pain. It is recommended that patients change into suitable underwear before exercise, do sufficient warm-up exercises, and gradually increase the amount of exercise in a gradual manner. If the problem of coronary artery stenosis exists in itself and chest pain occurs during exercise, you should go to the hospital in time to avoid adverse consequences.