Start in a lunge position. One leg in front, shin vertical, the other leg behind, knee resting on the floor. The front leg will be the working leg.
Begin by pressing your foot into the floor, this will load up your working leg, engaging your glutes and hamstrings.
Forcefully push through the floor, squeeze the glutes, and drive the knee up, so your thigh reaches parallel.
Return slowly to the start, by hinging from the hips and lowering the back leg. Pause at the bottom and repeat for repetitions. Switch sides.
Maintain a neutral back throughout