Control diet, but don't go on a diet, eat less rice, steamed stuffed bun, jiaozi and other foods, eat more vegetables, moderate beef, and eat less pork and chicken.
You can have some lotus leaf tea, thin belly.
Is calf fat or muscle?
If you run for more than half an hour every morning and then massage your legs, you will soon lose weight (but your weight may not change much, especially after exercise, you will be hungry and you can't eat too much).
Muscle is difficult to lose, so you need massage to soften it before running.
I don't know why you want to lose weight, but after 16 years old, your physical development will automatically become very S-shaped, as long as you don't overeat and exercise more.