Usually pay more attention to diet, eat more and eat less, and avoid overeating. After dinner, you can do some exercise properly, such as running in the playground, or doing sit-ups and hula hoops every day. Try not to sit or lie down immediately after eating, and try to hold your chest, abdomen and buttocks, especially when sitting, reminding yourself to pay attention to abdomen every day, which will effectively prevent tummy and so on. The above is my personal experience, I hope I can help you. If you are satisfied, I wish you success. Thank you.