4 Single-Leg RDL
Sets: 3 Reps: 10 Rest: 90 sec.
Hold a dumbbell in one hand and balance on the opposite foot [A]. Keeping the arch in your lower back, bend your hips and knee and lower your torso as far as you can to the floor [B]. Reverse the motion to return to the starting position. That's one rep. Complete all the prescribed reps, and then repeat on the opposite side.