It is best not to lose weight through drugs, which will rebound and hurt your health. You can eat more fruits and less staple food at night, but you must eat well for breakfast and lunch and do more exercise. You can play more basketball and run more, and you must lose weight healthily.

Guiding opinions:

Sit-ups are mainly to reduce abdominal fat. If you want to reduce your legs, I suggest you jump rope and run. You can also download Zheng Haiyan aerobics from the Internet to do it. Losing weight is very effective.