Start standing with your feet hips-width distance apart, holding dumbbells at your sides.
Step your right leg diagonally behind you and to the left so your thighs cross, simultaneously bending both knees as if you were curtsying. Make sure your front knee is aligned with your front ankle. Both knees should form roughly 90-degree angles.
Pull your core toward your spine throughout the movement, and avoid hunching your back.
Drive through your left foot, and push off of your right toe to return to standing.
Switch sides. Do 12 reps on each leg (24 reps total).