Hello, the last two days of menstruation and the first week after menstruation are called "fat burning welfare period". During this period, the body's ability to decompose fat is 20% higher than usual, which is the best time to lose weight in the abdomen. If you can control your diet and help with some exercise, it's easy to burn off the fat in your abdomen. Health experts from deep mountain fruit farmers suggest that you must control the intake of high-calorie and high-fat foods at this time. You can eat more coarse grains and vegetables and less carbohydrates with high sugar content. With running and sit-ups, you can lose a lot of abdominal swimming rings!