- Lie on your stomach and place your forearms on the ground in a way that your Upper arms are placed directly under your shoulders.
2. Place a weight directly under your stomach and then flex your abdominal muscles and lift your knees off the ground.
3. Now start pulling the weight to one side using your arm (Without moving any other muscle).
4. Now pull it back to your other side while keeping your entire body in a straight line.
5. Keep repeating the movement until fatigue.