Weight loss class: why do you get fatter when you exercise? Many people think that as long as they take part in sports, they can consume excess fat in their bodies and achieve the goal of losing weight. As a result, more and more people take part in sports to lose weight, and various weight-loss training classes have mushroomed everywhere. But I often hear people complain: "Why do we participate in sports together, and she can lose weight while I am getting fatter?" Ms. Li encountered such a situation. A year ago, 42-year-old Ms. Li made up her mind to attend a slimming and bodybuilding training class because she was getting heavier and heavier. After training for more than half a year, the body mass index has not decreased, but has increased. Ms. Li is very depressed when she thinks of the intensive training that has been sweating for the past six months. She can't understand: why is Ms. Wang, who came to the training together, getting slimmer and slimmer, but still bloated? Does exercise to lose weight have no effect on me? In fact, the reason why Ms. Li has such a situation is because the intensity of exercise is too great, not that exercise to lose weight has no effect on her. It can be said with certainty that exercise is effective for anyone to lose weight. The key is that the way and method of exercise should be correct, because exercise to lose weight has a "personality". As we all know, heredity is a common factor leading to obesity, and the inheritance of muscle fiber type is closely related to weight loss effect. Physiologically, human muscle fibers can be divided into type I and type II, and type II muscle fibers can be divided into three types: IIa, IIb and IIc. Different people have different contents of type I muscle fibers and type II muscle fibers. Type I muscle fiber is a typical slow red muscle, which is good at aerobic oxidation for energy supply. People engaged in endurance sports, such as excellent marathon runners, have a high proportion of slow muscle fibers in their bodies. When people with a high proportion of slow muscle fibers exercise, the way of muscle energy supply is aerobic oxidation, and the energy required for aerobic oxidation is mainly provided by glucose and fat. Therefore, people with a high proportion of slow muscle fibers have a relatively good effect of losing weight through exercise. However, it should be noted that the utilization rate of sugar is obviously higher than that of fat in aerobic exercise, and the energy supply ratio of fat can reach a higher level only in the process of aerobic exercise 1 hour or more. Therefore, people with a high proportion of slow muscle fibers, no matter what kind of exercise they take, must persist for more than an hour in order to achieve better weight loss. Into the book of slimming and bodybuilding? 0? 2 planning: slimming series becomes the perfect summer dress woman.