In fact, there is no such thing as local fat reduction. Running is to reduce body fat, so when running, you can not only thin your legs, but also thin your waist. Running can consume fat in legs and waist, and reduce leg circumference and waist circumference! In fact, if you want to burn fat by running, you'd better run for more than 20 minutes, at least 40 minutes. Keep this intensity and stick to it every day. After one month, you will find that your legs have lost a lot of weight! In fact, when running, our leg muscles have been exercised. It is normal for leg muscles to increase, but correct measures should be taken to prevent excessive muscle growth and deformation of leg muscles! Therefore, you must relax the muscles of thighs and calves before running, so that the muscles are in a state of relaxation and warm-up. After running, you must stretch in time, statically and dynamically, which can shape your muscles and make you have slender legs!