There are several reasons for soreness, such as after too much exercise the day before, especially anaerobic exercise, when glycolysis occurs in the body, glycolysis will produce too much lactic acid in the body, when lactic acid accumulates in the body, feel sore and weak. If rhabdomyolysis or increased creatine kinase is caused by excessive exercise, you will also feel sore and weak all over. In this case, we must closely observe the color of urine, and if tea-colored urine appears, we need to go to the hospital immediately for symptomatic treatment. If it is the initial stage of viral cold, it will also occur that the body is sore and weak, and other diseases that are infected by virus in the body will also have this prodromal symptom. If you have a low fever or other symptoms such as dizziness, headache, dry throat or cough, you need to go to the hospital immediately and get a blood test and then get symptomatic treatment so as not to delay your illness.