HOW: Get set up balancing on one leg with good arch position. Begin the exercise by leaning forward and shifting your weight and center of gravity towards your toes. Go just until the point that you can control and not let your heel lift off the ground. Push the front of your foot into the ground to return to starting position and repeat.
FEEL: This should feel like a control exercise, specifically your calf and foot muscles working to control your center of gravity shifting forward. You should also feel your calf and foot intrinsic muscles working to return your body to starting position.
COMPENSATION: Keep your body straight, don't fold at your hips or arch your back with this exercise. Use your calf and foot muscles to do the work.