5 LEG CURL (HAMSTRINGS)
A) Lie on your stomach, legs extended behind you, and feet flexed. Support your upper body with your forearms. B) Cross your left foot over your right ankle. Slowly curl your feet toward your butt, pressing your left leg down on your right to add resistance as you lift, until your legs are bent about 90 degrees (keep knees on the floor). Lower your legs to starting position. Switch legs and repeat; do two sets of 12 to 15 reps with each leg.