Feeling heavy may be a physiological phenomenon of excessive exercise, or it may be caused by diabetes, chronic fatigue syndrome and other diseases. 1. Excessive exercise: If you do a lot of exercise in your daily life, your body will feel tired and fatigued, resulting in a heavier body. 2. Diabetes: Diabetic patients may seek treatment for generalized fatigue and generalized heaviness. Once the body is particularly heavy, it is necessary to monitor blood glucose to clarify whether there is diabetes. 3. Chronic Fatigue Syndrome: If the patient suffers from chronic fatigue syndrome, the phenomenon of extra heavy body may also occur. This disease is psychogenic and may be related to high mental stress. Therefore, when the patient has a heavy body, it is recommended to go to a regular hospital as soon as possible for examination and cooperate with the doctor’s treatment.