• Lie with back on floor, holding physioball between ankles
• Keeping arms and legs straight, raise upper body and legs until hands meet physioball directly over waist
• Lower with control; repeat for specified reps

Modification: Pass ball between feet and hands at the top of each rep

Sets/Reps: 3x15
Winslow: I try to keep my core tight by flexing it, so there’s no wobbling. I want to keep the movement crisp.