1, eat less staple food (polished rice such as rice and bread, you can eat more coarse grains) and eat more fruits and vegetables without reducing too much meat.
2. Don't eat snacks (even if you eat, you should look at the calories. If you have any questions, you can ask me). It's best not to drink drinks, because many of them add a lot of sugar and the taste is not so delicious, so I won't list them one by one.
3. Moderate exercise and continuous exercise.