1. Stand upright with one or both feet from the ball joint to the toe on a step.
2. Your heels of the foot is beyond the edge of the step.
3. Your shoulders, hips and ankles should be aligned in a straight line.
4. Now descend your heels in a vertical line towards the floor and at the end of this motion push up your heels vertically upward while pushing down your toes.
https://www.youtube.com/shorts/haHcBAd637E
