Holding a dumbbell at your chest, step your left leg wide to the left, coming into a lateral lunge, bending your right knee. Keep your chest lifted and your weight in your left heel.
Push off with your left foot and cross the left leg behind your right foot, coming into a curtsy, bending both knees.
Step out to the left, returning to your side lunge. This completes one rep.
Continue alternating between these two moves for 15 seconds. Repeat on the other side for another 15.