1. First lie down on the floor and bent your knees with your feet secured on the floor. And place your hands behind your head or in front of your body in a straight form; this is your starting position.
2. Flex your hips and spine to raise your upper body and arms until its perpendicular to the ground.
3. Then twist your body with one elbow almost touching the opposite knee.
4. Reverse the motion and repeat.
Tips and Advises:
Lower your body backward until almost parallel to the floor, about three-quarters of the way down because if you lean back too far, tension is released from the abdominal muscles and more stress is placed on the lower back.