HOW: Crossover, return, behind. Place a ladder on the ground. Stand in a square at the end of the ladder. Move laterally as you cross one leg over in the front and then that same leg behind you while rotating your hips with the movement. Try to place one foot in each box.
FEEL: You should feel the muscles in your legs working.
COMPENSATION: Stay on the balls of your feet. Keep your chest facing laterally while your hips and legs move.