HOW: Set yourself up by suspending a foam roller between the side of your knee and the wall. Move your outside leg behind you to get into a kickstand position, and shift ~80% of your weight over to your front leg. Hinge your hips as you reach towards the floor with your hands while staying firmly planted on your stance leg and allowing the rearfoot to maintain a kickstand position. Repeat for the prescribed repetitions.
FEEL: You should feel the glutes on the side of your pelvis working, your hamstring and quad muscles working, as well as smaller intrinsic muscles in the foot.
COMPENSATION: Avoid caving the knee in and do not lean into the foam roller with your trunk.