• Lie on back with feet on physioball
• Raise body into straight line so that only shoulder blades touch floor
• Keeping hips high, curl ball toward butt
• Slowly allow ball to roll back out until legs are straight

Sets/Reps: 2x10

Technique: Keep your hips above your heels the whole time, and keep your body in a straight line.

The Payoff: Lower back, glute and hamstring strength.