Eat less and exercise more. You can make tea with lotus leaves, with almost no side effects. Personally, swimming and sit-ups are better. Stand for half an hour after dinner, don't sit or lie down. If you sit and work most of the time, fat can easily accumulate on your stomach. After work and dinner, you can walk for about an hour or practice sit-ups, and you can arrange swimming once or twice a week. Skipping rope is not recommended, which is easy to damage the knee joint and bad for the spine.