Fasting aerobic training is not recommended for hypoglycemia. Hypoglycemia is defined as fasting blood glucose concentration <2.8mmol/L in adults and ≤3.9mmol/L in diabetic patients, which is the standard of hypoglycemia. Fasting in the absence of eating any calorie-containing food for jogging, jumping rope, swimming and other aerobic training, at this time will further consume the body's energy, sugar, will make the blood glucose drop, such as fatigue, cold sweats, pallor, hunger, and other symptoms, and in serious cases, coma and other symptoms may occur. Therefore, low blood sugar is not recommended to do fasting aerobic training. Patients who are prone to hypoglycemia, especially those who have frequent recurrent episodes of hypoglycemia should avoid fasting exercise, and should go to the hospital as soon as possible to find out the cause of the disease and avoid further development of the disease. And carry sugary food with you, which helps to replenish sugary food in time to relieve the symptoms of hypoglycemia during hypoglycemic episodes.