First of all. For lunch, drink a glass of water first, and then eat slowly.
The slower.
Eat whole wheat bread first, and then chew slowly. Never eat after 8 o'clock.
If you are hungry a few hours after a meal, drink water and boiled water.
Third. Choose a sport. Exercise for 2 hours in the morning and 2 hours in the afternoon. Besides, don't sit after dinner. Get up and walk for about 15 minutes.