HOW: Get set up standing near a wall or a surface/object you can use to help with balance. Place your heels on an elevated so that you're resting in a heel-lifted position. Begin the exercise by pushing down into the ground through the balls of your feet to lift your heels up off the elevated surface. Hold for a moment, then lower down and repeat.
FEEL: This should feel like a calf workout.
COMPENSATION: Don't let your knees excessively bend when you lift your heels. Avoid using momentum, perform this motion slowly.