A friend of mine who is a model told me some of their experiences:
What to eat?
Mainly vegetarian, especially to control the balance of quantity and energy. Basically eat more carrots and fruits as the staple food, and eat less meat, especially pork ~
What sports do you do?
Gym, yoga is my favorite. Of course, there are daily jogging and small fitness at home at night. Mainly to strengthen the stomach.
What you said about exercise and food can turn white. I'm not sure. I know a little secret of slimming: use slimming cream before exercise. For stars. Then why are your hands and feet so slender? Model friends told me that they all use ourzi slimming cream in their circle. It is a domestic brand. The price is good.