Pectus excavatum refers to the inward and backward indentation of the sternum, a deformity that can compress the patient's heart and lungs. To exercise for pectus excavatum, patients are advised to practice deep breathing exercises to enhance lung function, as well as engage in appropriate running and routine physical activities to strengthen heart function. However, in cases of severe pectus excavatum which severely compresses the heart, even pushing it entirely to the left side, patients may not be able to tolerate running and other intense activities. Therefore, it is quite difficult to completely correct pectus excavatum through exercise alone. Some parents might think that doing push-ups can correct pectus excavatum, but push-ups make the pectoral muscles on both sides stronger, and since these muscles pull outward, the force is not directed in the same way as the inward and backward indentation of pectus excavatum. Furthermore, continuously training the pectoral muscles causes them to develop, and the resultant thickening of the muscles on both sides can exacerbate the inward and backward indentation of the sternum in the middle. Thus, after appropriate cardiovascular and pulmonary exercises, those with severe pectus excavatum should still consult a doctor for active advice and consider surgical treatment options.