One-ball sit-up method: put the fitness ball on it, make your back lie flat on it, bend your feet to support at 90 degrees, put one hand on the back of your head, press the fingers of the other hand on your abdomen, roll up your body and tighten your abdomen for two seconds, and then slowly recover. Pay attention to the abdomen to tighten at all times, and the fitness ball must be steady and slow. If you feel tired in the neck, you can close your chin slightly. Exhale when rolling up and inhale when recovering. This action can exercise rectus abdominis. Method 2: Butterfly twist: The dieter can do the above six movements according to the demonstration of the picture, each movement can be done in 1 minute, and can be completed in 1 minute at most. Six movements count as a group, and there is no rest between movements. After the whole movement is finished, rest for 2 to 3 minutes, and then do the second, third and fourth laps. The more rounds you do, the more calories you consume, and the better the effect of losing weight. Dieters can arrange exercise time according to their own requirements. Generally speaking, it is recommended to exercise for more than 30 minutes at a time, exercise 3 times a week, and keep practicing for 6 weeks to see certain results. In addition, I suggest that you insist on drinking (9-flavor taro tea), adjust the metabolic balance of the human body, and reduce the visceral fat of "Man Cang" in the body, so as to achieve the purpose of losing weight.