Insider's Guide to Stability Balls

Fat-Blasting Stability Ball Cardio

Burn an extra 100 calories by adding one minute of the following cardio bursts on the ball between each set of strength moves.

Ball Jog

Sit tall on the ball with abs engaged. Lift your knees up and down as high as possible while bouncing in place on ball.

Step-Touch

Sit tall on the ball, feet together. Step right foot out to the right, then step left foot to meet the right, lifting butt slightly to roll the ball with you. Repeat, stepping in opposite direction; continue, alternating sides.

Ski Step

Sit tall on the ball, feet together. Lift both feet, swinging legs to the right and arms to the left, as if planting ski poles. Repeat in opposite direction.