View this “clock lunge” video once through first before doing it to learn form. It’s okay if the traveling foot touches the floor for balance in between steps, versus trying to “hover” as we do in the video. Tighten your abs; land softly, and lead with your heel, not toes, when stepping out to lunge. Take small steps, except for the long reach right and left and you’ll see. Nice cardio hit at same time!