Start standing with your feet wider than your hips and pointing just slightly in. Brace your core as you shift your hips backward, like you were going to sit in a chair, tilting your torso forward about 45 degrees.
Bend your right knee to come into a side lunge, as in the previous exercise. As you come into the lunge, simultaneously lift both arms to shoulder height on either side. Again, make sure that your right knee doesn't go past your toes and continue to pull your core in tight.
Hold for a few seconds, then shift your weight to the left to repeat on your other side. This time, lower your arms back down with control, so your hands are below your chest and your arms are in line with your shoulders.
Continue shifting back and forth between legs for 30 seconds.
If your lower back or hips hurt during this move, continue with the upright lunges instead.