When we suddenly feel chest pain, we should take a rest immediately and not take part in strenuous sports, such as basketball and football. All these should be stopped, and then we should take oxygen therapy under conditions. If we just haven't exercised for a long time, then suddenly exercise it, which leads to chest tightness and chest pain, then we should observe. If the chest pain persists, we should pay attention to it because it may be angina pectoris, myocardial ischemia, myocardial infarction, pericarditis, aortic dissection, pulmonary embolism and other diseases. For chest pain, we can treat it according to the cause after diagnosis. If it is particularly severe pain, we can take painkillers, such as ibuprofen sustained-release capsules and sustained-release tablets. Usually, we should take oxygen to relieve our chest tightness and shortness of breath. The above scheme is only for reference. Please use the drug according to the drug description or the doctor's advice in a regular hospital.