If you are exercising for the purpose of losing weight, it is best to exercise on an empty stomach in the morning, because exercise at this time can make you burn more fat and help you lose weight. Because after a night of metabolism, the calories taken in the night before have been used up. If you exercise at this time, it is easy to convert the fat stored in your body into exercise energy. Besides, if you can get up early and exercise often, you will lose weight quickly.

It should be noted that during exercise, the human body is in a moment of vigorous metabolism, and energy consumption increases at this time. If you exercise on an empty stomach for a long time, it will lead to insufficient glycogen storage in the liver, a large amount of blood sugar consumption, and no timely supply. In this case, the blood sugar concentration will drop rapidly, which will easily lead to hypoglycemia, and may cause dizziness, palpitation, black eyes and other symptoms.