Start standing with your feet together and your hands by your sides. Bend your knees to lower into a half squat, keeping your chest tall. This is your starting position.
Swing your hands out to the sides and overhead, standing up and stepping your left leg out to the side.
Lower your hands, step your left foot in, and bend your knees to return to the starting position.
That's one rep. Do 20 reps, alternating sides. Do three rounds total, alternating with Exercise 1 in this superset.