By the way, experts call the last two days of menstruation and 1 week after menstruation "fat burning welfare period". During this period, the body's ability to break down fat is 20% higher than usual. It is suggested that you do yoga for 20 minutes every day in the last 2 days of menstruation, 15 minutes for brisk walking and do some simple stretching exercises. Do aerobic exercise for more than 30 minutes every day after menstruation 1 week. Sports medicine experts suggest that walking at a speed of 6.5 kilometers per hour is the most effective way to burn body fat. Pay attention to abdominal exertion when walking, and imagine that your body is walking like hanging in the air, which is most helpful for burning abdominal fat and has unexpected abdominal effect. It is normal to feel abdominal tightness after exercise, which is the necessary process of abdominal fat decomposition. After 2-3 days, the abdomen will become soft again.