Early morning fasting is usually not suitable for more intense exercise, otherwise it is easy to cause hypoglycemia. Exercise is also usually not suitable immediately after a meal. If the exercise is long or very intense, it is still suitable to be carried out in the morning, afternoon or evening to prevent hypoglycemia. Exercise in the morning or afternoon can not be placed immediately after meals, otherwise it is easy to lead to gastrointestinal tract dysfunction, poor digestion and absorption, a large number of exercise after meals should be at least 1 hour after meals can be carried out. The choice of exercise time should be decided according to your own situation, and it is recommended to exercise under the guidance of professionals.