Fasting exercise can drink water. Wake up in the morning before the exercise can be supplemented with a small amount of water, supplemental water can alleviate the amount of liquid lost at night through urination, breathing, etc., so as not to lose too much caused by blood volume insufficiency, dizziness, chest tightness and other uncomfortable reactions during exercise, drink a small amount of water at the same time can promote the body’s metabolism. Exercise and exercise can also drink water according to their own situation, will not significantly affect the effect of exercise. However, it is not recommended to exercise on an empty stomach for a long time, if you exercise on an empty stomach for too long, it may cause insufficient glycogen reserves, a large amount of blood sugar is consumed, thus appearing dizziness, panic and other hypoglycemic symptoms. Fasting exercise, such as the emergence of uncomfortable symptoms, it is recommended to seek medical attention in a timely manner.