They control their diet by not eating high-calorie food. They seldom eat high-fat food, eat more coarse grains and try to eat as little as possible. It is suggested that you can add foods rich in dietary fiber, such as Chia seeds, because it will make you feel full and allow you to consume less calories every day, and maintain energy and endurance under the premise of controlling your weight. And they should exercise while controlling their diet. Whether it is control or exercise, it is still very important.