Work your core without doing a crunch! Research shows that abdominal exercises done on the stability ball activate twice as many core muscles as classic belly busters like the crunch and the sit-up. All you need is a stability ball to work your abs, back, butt, arms and balance! Grab a balance ball and roll out onto it, making sure to keep your balance. Hold the pushup position for 30 seconds and don't forget to breathe!
Strengthen the deepest layer of your abdominal wall and whittle away your waistline! This is a great exercise to flatten your tummy and protect your low back. We love using the ball because it forces you to let go of your large superficial muscles and use your deeper, stabilizing ones instead.