Abdomen, sit-ups. Legs, lying on the bed, hands on both sides, legs together, straight up, insist on half an hour every day, will definitely lose weight. You can also sit on your knees at 90 degrees, with your thighs on your calves, your upper body straight and your hands on your feet for half an hour. In fact, you do kneel like the Japanese, but it's public. It's all about losing weight. I tried everything.