A great combination of activation and single limb balance, this drill is much like a SL RDL in that it is unilateral flexion and extension of the hip. Here, though, we are adding the element of a high knee drive during extension and our focus is on slow, smooth movement and perfect balance without a counterweight.
Starting in a hip-width stance with soft knees, drive one knee up towards the torso while balancing on the other leg. Then, take the elevated knee and reach back out behind you while initiating and hinge of the hip, bringing the torso forward. The ultimate goal is to achieve something of a “T” position, with back leg fully extended and inline with a flat back, parallel to the ground.
Keep the movement slow, and try to hold at the bottom for a full second or longer. If you must, rest between reps by bring the foot back to the ground. To make it more difficult, keep your weight balanced on the stationary leg throughout the set.