Sleeping and tiredness may be a physiological phenomenon or a symptomatic manifestation of certain diseases, such as anemia, diabetes, etc., and should be promptly consulted to identify the cause of the disease. 1. Physiological factors: hunger, excessive labor, long hours of work, sleep deprivation, pregnancy and other physiological factors, can appear to sleep tired body fatigue symptoms, generally through eating or rest can be restored. 2. Pathologic factors. (1) anemia: due to insufficient or reduced red blood cell production, excessive destruction of red blood cells and blood loss, resulting in human peripheral blood red blood cell capacity is lower than the normal range, and can not be caused by adequate oxygen supply to tissues and organs. The main symptom of anemia is fatigue and weakness, which may be accompanied by headache, dizziness, insomnia, pale skin and mucous membranes, etc. In severe cases, it may lead to shortness of breath and menstrual abnormalities. (2) Diabetes mellitus: Diabetes mellitus patients due to the peripheral tissues of glucose utilization disorder, fat decomposition increased, protein metabolism negative balance, may appear symptoms of physical weakness, usually accompanied by thinness, excessive drinking, polyuria, some patients may also appear itching symptoms, affecting sleep and life treatment. In addition, hypothyroidism, malignant tumors, hypoglycemia and other diseases can appear sleep tired body fatigue symptoms, should be timely consultation, identify the cause of the disease, follow the doctor’s instructions for treatment, so as not to delay the disease.