First of all, you should distinguish between subcutaneous fat thickness and muscle circumference. After the toes are tightened, they are still soft. That is fat, which is mainly reduced by dieting and increasing exercise time. If it is a muscle, there are two ways of thinking: first, during the long-term (more than one hour) lower limb exercise (such as jogging), part of the protein in the body will be converted into heat, which can achieve the effect of reducing the muscle circumference; Second, by lifting the heel and skipping rope, you can improve the muscle relaxation and make the calf look thinner. Many people say that leggings (to put it bluntly, tights) are effective. This practice has never been tried, but it is recognized that tights can be worn during exercise to increase muscle capacity. Be sure to remember: stretch after exercise (such as straightening your knees and touching your toes). Finally, we need to understand that the skeleton is the fundamental factor that determines the leg shape. If the skeleton is big, you can't blindly pursue thin legs. It is best to consult a professional coach or specialist first.