STEP 1: Using a stability ball, sit on the ball with your feet shoulder-width apart. Begin to lower yourself securely by putting your shoulders, your back and your tailbone on the ball. Your feet should be flat on the floor with your knees bent. Position your hands behind your head for support of your head and neck. This will be your starting position
STEP 2: Exhale as you squeeze your abdominal. Use your core muscles and not your head and neck to help bring you forward and into the sit up. Keep your chin tucked towards your chest, and your lower back should stay on the ball at all times. Once at the top of this movement, hold this position for 1 minute. Inhale as you lower your body to return to the starting position.
STEP 3: Rest between sets. Repeat steps 1-2 to complete your desired reps and sets.