Do you lose weight faster when exercising on an empty stomach? Sports nutritionists tell you the truth with a practical experiment

Health 9:36am, 22 August 2025 108

[Changchun Monthly Journal/Editorial Department] A previous study in the journal "Clinical Endocrine and Relief" pointed out that if you exercise first and then eat breakfast, the amount of fat is twice as good as you exercise after breakfast. Many people who love sports and lose weight are immediately ready to move and plan to exercise on an empty stomach. Sports nurse Yang Chengfeng said that a recent study from the University of Bath in England pointed out that although the fat burning in exercise first and then breakfast is twice as much as the breakfast set before exercise, the total heat consumed is the same, and even the fat reduction results after 6 weeks are not different. High fat burning does not mean high fat reduction!

Easy on an empty stomach and fat lift twice. Long-term fat loss effect is the same.

East can help consume heat, but whether it is to eat before exercise or eat breakfast after exercise has always been a hot topic for sports lovers. A recent study led by the University of Bath in England recruited 30 overweight and long-term seated people for a ride experiment and found that everyone consumed about the same amount of heat after riding, but for those who were on an empty stomach, the amount of fat was twice as high as those who were only after eating. Yang Chengfeng Nutritionist explained that the fat utilization rate of the heat consumed by fasting athletes is 40% to 50%, but the results of fat reduction after 6 weeks are the same.

Exercise for one hour, fat burning difference is replenished in one mouthful. It is confirmed again that high fat burning does not mean high fat reduction. Yang Chengfeng, for example, a person with 60 kilograms consumes about 300 to 500 calories in one hour of riding. If it is a medium strength state, the 50% fat utilization rate is 150 calories. The fat utilization rate of those who exercise after eating is 25%. The fat burning rate is 75 calories, which is only 75 calories less than those who exercise on an empty stomach. The 75 calories will be added after taking one more bite of the 75 calories. Therefore, if you are not sure that you can tolerate an empty exercise, it is not recommended to force yourself to exercise on an empty exercise.

Main effects of fasting exercise The main effect of improving insulin sensitivity

Suitable fasting exercise is to improve insulin sensitivity. Researchers found that fasting exercise can make fat utilization efficient, muscle cells' response to insulin improves, and reduces blood sugar levels. This has an improvement effect for some people with reduced insulin sensitivity and difficult to control blood sugar. However, Yang Chengfeng Nutritional Teacher reminds that diabetic patients do not recommend conducting the situation in accordance with the doctor before they have obtained the doctor's confirmation.

is limited to medium strength exercise. High strength exercise is not suitable. In addition, it should be noted that the situations conducted in this study are limited to "medium strength" such as jogging and riding. If you need to engage in high-strength sports, such as long-term continuous sports, high-strength intervals or heavy-weight training, this type of sports with high demand for carbohydrate, it is not suitable to adopt fasting exercise. Yang Chengfeng Nutritionist said that due to insufficient heat intake before exercise, you may feel powerless during movement, and may not be able to exercise halfway through half of the exercise, and may even be injured during exercise.

(provided by text authorization/Health Medical Network)