HOW: You are going to be moving side-to-side in this exercise. Step to the side turning your body 90 degrees to perform a rotating lunge. Immediately reverse the movement and turn 180 degrees and go into a lunge in the opposite direction. Push your self back up to the starting position and repeat.
FEEL: You should feel all the muscles in your legs working.
COMPENSATION: Focus on controlling the rotation and move from your hip. Also, focus on good balance and posture of your trunk the whole time.