#213 / LEG CURL 213-Leg-Curl from nHANCE on Youtube.    This is the machine that revolutionized hamstring training, injury prevention and rehabilitation. The #213 YoYo™ Leg Curl is a “classic” in the YoYo™ product family. The supine #213 YoYo™ Leg Curl allows for either the uni-or bilateral open chain knee flexion. Using smart, safe and simple solutions, range of … Continue reading #213 LEG CURL