Lateral Lunge With Knee Drive
Stand with your feet together, then take a large step out to the side with your right leg. Keeping your chest lifted, push your hips back and bend your right knee so it tracks over your toes while keeping your left leg straight. Push off your right foot, and as your left leg straightens, bend your right knee and lift it in front of you at hip height. Extend your right leg to the side again and repeat. Complete all reps on one side, then switch.