Walk Off 10 Pounds in 3 Weeks
Lateral walking lunge
Stand with your left side facing a set of stairs. Take a big sideways step up 2–3 stairs with your left foot and bend left knee to come into a side lunge; keep your knee behind your toes. Straighten your left knee, and bring your right foot up beside your left foot before stepping your left foot up again to begin another lunge. Continue for 30 seconds, walk back down, then repeat on the right side.