Chest pain has the following reasons: First, due to respiratory muscle or diaphragm spasm, mainly in the activity is not warmed up in advance, and directly into the more strenuous activities will lead to respiratory muscle or diaphragm muscle fibers transient ischemia, resulting in spasm of the muscle fibers and pain, pain in the activity or breathing will be aggravated, want to relieve can be adjusted through the abdominal breathing. Secondly, the cause of chest pain may also be rib chondritis or rib cartilage injury, in many sports or activities will lead to cartilage damage, some people may have a history of chronic costochondritis, in the absence of a very good early activities or activities in the posture of the improper for strenuous exercise, will lead to chest pain like forked air. In addition, chest pain should be distinguished from heart attack, when the heart attack and heart attack also have symptoms similar to chest pain, this time the main sweating, the left side of the chest pressure-like pain is mainly, we should go to the hospital in time for investigation.