The first thing to consider when experiencing pain when exerting yourself in the chest is a muscle injury. When the muscle contraction caused by exertion, pulling the damaged tissue, pain and discomfort symptoms. If there is a history of obvious trauma, it is not a big problem, try to pay more attention to rest, you can apply local hot compresses. If the pain is more serious, you need to go to a regular hospital. If the pain is in the breast, you need to go to the hospital, do ultrasound examination of the breast, to determine whether it is caused by breast hyperplasia, which can cause pain when pressing or moving. This kind of pain usually accompanies the menstrual cycle, and the symptoms will be relieved or disappear with the onset of menstruation. It is due to the hormone level disorders in the body, and the imbalance of estrogen and progesterone leads to the overgrowth of mammary glands, and the incomplete regrowth of the mammary glands. Oral medication can be taken for symptomatic treatment, such as lactofetish elimination, etc. In either case, it is recommended to go to the hospital for consultation and diagnosis.