First of all, although these people can open their legs, they can't control their mouths. This is a common problem for people who can't keep a good weight for a long time. Many people in life try to lose weight through exercise, but they don't control their diet. Finally, they lose a little weight and eat it back. Therefore, if you want to lose weight, you must control your diet.
Secondly, most people often take part in physical exercise, but most people focus on strength training. Every gym always has a group of greasy uncles. They insist on going to the gym to exercise every day. They occupy the free power area and play barbells and dumbbells every day. But don't do aerobic exercise. Take two steps on the treadmill at most. Don't believe that simple strength training can lose weight. In the process of losing weight, the main function of strength training is to maintain muscle mass and improve basal metabolism, and the secondary function is to consume calories and fat. This is not to say that we are not allowed to do strength training, but to show that the main function of aerobic exercise is to consume calories and decompose fat, which obviously does not help muscle growth. If the aerobic intensity is high and the quality is good, the muscles will be decomposed to some extent. Only from the perspective of losing weight, aerobic exercise is more effective and strength training is relatively inefficient.
Finally, although some people are also doing aerobic training, they are not doing enough aerobic exercise. Only by participating in whole-body exercise or large muscle group activities can the heart rate and oxygen uptake reach the standard of aerobic. For example, skipping, you can generally jump 120 times to achieve the purpose of exercising. But if your goal is to lose weight, these are not enough. Therefore, if you want to lose weight, you should not only do aerobic exercise, but also reach a certain intensity to be effective.