Get it Done Fitness

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; hold that position. Using your abs, bring your right elbow across your body to the outside of your left knee. [...]

Sit on a Swiss ball with your feet shoulder-width apart on the floor. Lean back, so that your back is almost parallel to the floor. Straighten your arms and point them toward the ceiling. Contract your abs, as you would for a crunch, while you reach for the ceiling with your fingertips. Hold the contracted [...]