Crunches on Stability Ball

• Start by sitting on top of the ball with your lower back curved inwards and your feet planted firmly on the floor at hip-width apart. Engage your core.

• Walk your feet out until the middle of your back is on top of the ball. Place your hands lightly behind your ears or crossed over your chest.

• Inhale and tighten your abdominal muscles. As you exhale, lift your shoulder blades a few inches off the ball by contracting your abdominal muscles. Don't pull on your neck.

• Hold this contracted position for a second as you continue to breathe. Inhale as you slowly roll back down to the starting position.

• Concentrate on keeping your chin off your chest and using your abs, not momentum, to lift your torso. Avoid arching your back.

• Increase the difficulty by straightening your legs into a tabletop position.

• Remember to keep your core braced throughout the movement. Don't let your back arch or sag.

• Take breaks as needed between sets. Make sure you're not holding your breath during the exercise.

• For added stability, you can place your ball against a wall. Adjust your position based on your fitness level.