This single-leg balancing exercise is a knee/ankle/quad builder and stabilizer, effective for any age athlete to increase strength and balance for all sports. Perform this drill for only 1 set of 20 repetitions (1/20), and then alternate to the opposite leg. Keep in mind that this drill is part of a complete leg workout of an even larger training program designed for professional athlete and yet tailored for youth athletes. CLICK HERE to get the rest of these programs!