It's not very easy to lose the fat of your waist and abdomen. You can't achieve your purpose if you only do body mechanics, you need to do 3 times a week at least with low-fat diet, and do (resistance) dumbbell exercises.

【Action 1】 Lie on the floor, put your hands beside your hip. Raise your legs up at a 90 degree angle to your upper body, move your hip up with your abdominal force, then put down. Repeat 2 groups, 10 to 15 times every group.