Sit on a high stool in front of a high cable machine.
Move to the edge of the stool so that the leg you want to exercise is over the edge and attach the strap around the foot of the leg.
In the beginning you leg should be off the floor with hip and knee slightly bent.
Then press you heel backwards, squeeze your buttocks and straighten your hip.
Let the cable pull you leg back to the starting position in a controlled manner and repeat.
