TECHNIQUE: . Place your heels onto the ball with the foot flexed. Push your hips up off the ground and activate the core. Engage the hamstrings as you pull the ball toward you ADVANTAGES: This is a great way to strengthen and work your hamstrings while challenging your core FAULTS: The most common fault is collapsing in the hips (letting the core disengage) and pointing the feet and using all calf. SCALING: If you are looking for a challenge try the one leg variation ONLINE TRAINING: www.sandandsteelfitness.com/online-training EXERCISE DATABASE: www.sandandsteelfitness.com/exercise-database PERSONAL TRAINING www.sandandsteelfitness.com/personal-training