The first thing to say is that there is no partial weight loss. If you want to thin your legs and waist, you have to reduce your body fat rate. Secondly, the way students lose weight without rebounding is the same as the way office workers lose weight, that is, "keep your mouth shut and take your legs." Diet control is the key. Usually eat more vegetables and high-protein foods, and try not to eat junk food containing oily polysaccharides. If the food in the canteen is greasy and unavoidable, you can prepare a bowl of warm water and rinse the food in water before eating. Exercise is an auxiliary way to consume body heat. Exercise at least three times a week for 30 minutes to 1 hour, such as running, playing basketball, cycling, etc. When you are tired of studying, you will do squats and other sports without equipment. As long as you persist, you will see the effect within one semester. Hang in there, small waist and thin legs are waving to you.