Start standing on both feet, then reach your hand toward the ceiling and take a large step forward with your left foot, bending both knees to 90 degrees coming into a lunge with your torso upright.
Keeping your left knee bent, lean your torso forward as you straighten your right knee. You should feel your left glute engaging more deeply.
Press through your left heel and bring your right foot forward to meet your left, and return to standing upright while lowering your hands to your sides. Repeat this sequence of moves on the other side to complete one rep.