Breathing pain chest pain is partly due to physiological factors and correlates with strenuous exercise. Excluding physiological factors, it may be caused by disease factors, common causes include heart problems, lung problems and rib problems. 1. Physiological factors: After strenuous exercise, the respiratory rate increases, the thoracic movement increases, the muscles produce anaerobic fermentation, resulting in the accumulation of lactic acid, which will cause related symptoms when resting. 2. Pathological factors (1) Heart problem: if you have coronary artery stenosis, increased exercise or emotional excitement may lead to insufficient blood supply to the myocardium, which may further lead to related symptoms. (2) Lung problems: lung diseases such as pneumonia, pleurisy, lung cancer, etc., which cause irritation to the surrounding tissues, may also cause related symptoms. (3) Rib problems: Costal chondritis, intercostal neuritis, and rib fractures cause irritation of the surrounding tissues, which can also lead to symptoms. If you have obvious respiratory pain or chest pain that is not relieved, you need to consult a doctor for observation and standardized treatment under the guidance of a clinician to avoid delaying your condition.