8. Twist And Crunch

Instructions: Place a mat on the floor and lie down on your back, with your hands by your ears and your legs perpendicular to the floor. Twist your hips slightly by contracting your left oblique muscles (that’s the one running down the side of your soon-to-be visible six-pack). Hold that position. Using your abs, bring your right elbow across your body to the outside of your left knee. Slowly return to the starting position. Repeat the movement on your right side and do 10 reps.