No, it is not good to exercise on an empty stomach. After fasting exercise, blood sugar will drop, which will make people particularly tired, and their heartbeat will be unstable and too fast. In order to prevent blood sugar from falling, you should supplement some carbohydrates properly before exercise, such as a cup of sugar water and some biscuits, but never eat enough, as long as you are not hungry.

Tip: It is best not to exercise on an empty stomach in the morning and at night. Exercise requires proper energy. The energy source of the human body usually depends on the sugar intake in the diet, but when doing morning exercises on an empty stomach, the main energy source depends on fat. When people exercise on an empty stomach, the free fatty acids in the blood will increase obviously, and there will be "poisons" that damage the myocardium, causing arrhythmia and even sudden death.