Stand up straight on a step.
Stand on one leg and move the elevated leg back behind you over the edge of the step.
Bend your stance leg a little as though to lower your elevated leg towards the floor.
At the same time, raise your arm on the same side as your elevated leg up into the air.
You may even like to reach this arm up and over to the opposite side to increase the stretch.
Return to the upright position and repeat.
