The fat inertia of hips and legs is the most difficult to reduce. The activity of fat in different parts of our body is different. For example, the fat in thighs and buttocks is more inert, while the fat in chest and face is more active. Different metals have different activities, and the more active the metal is, the easier it is to be oxidized when it is placed in the air. Similarly, when fat starts to be consumed due to hunger or exercise, the more active fat is, the easier it is to be consumed. This also explains why some girls, through dieting, originally wanted to lose fat on thighs and buttocks, but they didn't expect their breasts to get smaller first. Don't forget to add vitamins to lose weight. Considering these characteristics of fat, it is necessary to properly control diet and cooperate with targeted exercise to avoid the situation that "what you want to lose is not reduced, but what you don't want to lose is reduced". How much exercise is enough to make thighs thinner? If you have a healthy cardiovascular system, then you should insist on aerobic exercise for one hour every day. If you want to burn more fat and make your thighs more beautiful, you'd better exercise once every morning and evening. Research shows that running can burn fat, but for people with thick legs and fat buttocks, they may find running hard and uncomfortable and don't want to stick to it. So it is a good way to combine brisk walking with running. That is, fast walking is the main way, and several sprints are carried out on the way, one or two hundred meters at a time. After getting used to it, the running time is gradually extended. Swimming is a very popular fitness activity. Experts believe that if you want to exercise your legs in the swimming pool, you can run at one end of the shallow water area or run at the other end of the deep water area with a life jacket. The resistance of water will make the legs move more laboriously, but it won't bear great vibration like running on the ground, so it is a good way to reduce fat in the legs and buttocks.