Stand up straight on a step with your heels off the edge.
Stand with your feet parallel with the floor.
You may want a wall or a sturdy table in front of you for support.
Quickly drive through the balls of your feet to raise your heels up as though you are about to jump but not quite.
Control the movement as you lower your heels back down at a fast pace.
Just before your heels reach the start position, repeat the movement quickly.
Ensure you continue at a steady, powerful pace.
Do not allow your heels to drop below the step.
