Is fasting effective for losing weight?

　　However, according to research from the Dallas Bodybuilding and Sports Center in the United States, moderate exercise, such as regular walking, dancing, jogging, cycling, etc., 1-2 hours before meals (that is, on an empty stomach) can help lose weight. This is because no new fatty acids enter the fat cells in the body at this time, and excess energy-producing brown fat is consumed at this time, so the weight loss effect is better than exercise after meals. In addition, since the amount of exercise is appropriate and not strenuous, heat energy is consumed less, and the glycogen stored in the body is sufficient and will not affect the normal functions of the body.

　　We exercise at the speed of a 100-meter race. In more intense events like international competitions, almost all of the calories consumed come from carbohydrates and proteins, and not even a little bit of fat. Therefore, this has no effect at all on losing weight (consuming excess fat).

　　For another example, if we do short-term exercise of less than 20 minutes in the early morning, the calories consumed roughly come from the protein and sugar in the muscles. Therefore, exercise cannot achieve the effect of weight loss at this time.

　　But if you exercise on an empty stomach before dinner, such as a quick walk or jog, most of the calories consumed will come from fat. Therefore, if you want to achieve the goal of losing weight through exercise, you must not only grasp the appropriate amount of exercise, but also grasp the time of exercise. "Time" is critical! Blindly performing "exercise to lose weight" may be futile and achieve nothing.