Everyone knows that in addition to eating less, you should also cooperate with exercise, but if the exercise is wrong, losing weight may not do you any harm! There is a widespread saying on the Internet that "fasting exercise is better for burning fat". In this regard, nutritionists say that fasting exercise can not only burn more calories, but also may make you lose valuable muscles. It is suggested to eat a banana or steamed bread before exercise in the morning to supplement the required energy, so that the exercise effect will be good.

Nutritionist Zhang Peirong said that the energy source of human body can be divided into glycogen stored in muscle and liver and adipose tissue stored in the body. Glycogen is the easiest and fastest energy to be used in the body, while the efficiency of transforming fat into energy is usually slow. Generally speaking, when doing moderate-intensity aerobic exercise, liver sugar will burn first, and the proportion of burning fat will gradually increase after about 10 to 20 minutes.

Fasting exercise makes you lose weight faster? Research result: invalid

Does fasting exercise consume more calories? A study did an experiment. In the experiment, one group was asked to eat protein and starch before exercise, while the other group ate it after exercise. During exercise, the dietary conditions are the same. After one week, the weights of the two groups were measured. The results showed that there was no significant difference in weight loss between the two groups. In fact, how much heat can be burned by exercise is mainly determined by the time, intensity and type of exercise, and has little to do with whether to exercise on an empty stomach.

Exercise on an empty stomach may lose muscle tissue and make you dizzy and sweaty.

Zhang Peirong, a nutritionist, reminds that exercising on an empty stomach after getting up in the morning will not only consume more calories, but also lead to a similar situation of dieting and losing weight. During exercise, when the glycogen in the liver is exhausted, but there is not enough energy supply, in order to supply basic physiological operation, the body will decompose glycogen and part of fat in the muscle as energy sources. Although fasting exercise can consume calories, it will make you lose hard-won muscle tissue.