Stand up straight facing a step.
Have a wall or other supporting surface close to your side.
Place your leg to be exercised on the top of the step.
Step up, ensuring the knee on your stance leg travels forwards over your toes and does not dip inwards.
Bring your elevated leg up to touch the step for a little balance control.
Control the movement as you step back onto the ground behind, leaving your original leg on the step.
Repeat.
