People weakness, there may be a few reasons: First, may be overworked with recent work and study, mental stress and poor diet has a certain relationship. Second, whether there is insufficient blood supply to the myocardium, such as activities after there is no chest tightness, shortness of breath, panic phenomenon, when the situation is further serious, there will also be resting state of the precordial area discomfort and weakness of the state. Third, whether the phenomenon of neurasthenia, such as poor sleep quality, biological clock disorders, can also cause poor mental and physical weakness. Fourth, whether there is blood sugar, blood pressure problems, especially the elderly will appear weak and weak. Fifth, whether there is anemia and digestive disorders and acid-base pain, as well as ionic disorders, low protein and so on. It is suggested that you can go to the hospital to do some tests, such as blood routine, biochemistry, ultrasound and tumor series, to find out the problem early and clarify the cause of the disease.