Begin by placing the toes of your right foot on a bench, box, stair, or chair, with your left leg straight. Make sure your left foot is out far enough so that when you lower your hips, your knee stays directly over your ankle.
Bend your left knee, squeeze your right glute, and lower your pelvis toward the ground.
Press your left heel into the ground to straighten your left knee. This completes one rep.
Do 15 reps before switching legs.
For an added challenge, hold two dumbbells at your sides.