TECHNIQUE: Place the BOSU with the semi-circle up. Keeping your upper body over your hips hinge into your glute driving your opposite shin down to the middle of the BOSU. Utilize active core and have the weight in the front heel of the foot when lunging. ADVANTAGES: This movement improves stabilization of the core, hips, ankle and legs. The exercise will also work aerobic endurance if performed in a plyometric fashion. FAULTS: Common faults include driving the knee forward on front foot, shifting of the pelvis during the transition between leg positions, chest and arms fall forward from lack of core engagement. SCALING: Plyometric version would add an aerobic element to the movement and is much more challenging. Exercise can scale down to a static split squat skater lunge on the BOSU to build stability and balance. ONLINE TRAINING: www.sandandsteelfitness.com/online-training EXERCISE DATABASE: www.sandandsteelfitness.com/exercise-database PERSONAL TRAINING www.sandandsteelfitness.com/personal-training