Swiss Ball Jackknife: Exercise of the Week
The Swiss Ball Jackknife, also referred to as the Knee Tuck is a great exercise for targeting your lower abdominals. Since the ball is unstable, your abdominals have to work hard to maintain your body position. Goal: Hold your lumbar spine in neutral alignment while flexing your hips and drawing your legs in. Muscles involved: Lower Abdominals, Hip Flexors and Shoulder Girdle. Action: Get into a pushup position with the tops of your feet on a Swiss ball. Place your hands just slightly wider than your shoulders. Keeping your back flat contract your abs and bend your knees and hips and roll the ball...