Using the Reverse Hyper machine, which is awesome for building core strength in your glutes, hamstrings, and lower back. Note the weight is down raised here, but you start with your feet on ground and lift weight up to parallel with your body. When you do that, you are strengthening your core and the glutes and hamstrings. This lift is wonderful to grow your squat and deadlift as it directly hits those muscles needed for these 2 lifts.