Stand up straight balancing on your leg to be exercised.
Hold a ball in both hands.
Lift the other leg and hold it straight behind you.
Bend forward at the hips so that your body moves towards the foot on the floor.
Your elevated leg should move backward at the same rate.
Make sure you move through your hip and that you keep your spine in neutral.
As you move forward, allow your arms to dangle towards the floor.
At the halfway point, let go of the ball and quickly hinge at your hip to reach with your body to catch it.
You may feel the back of your legs working particularly on the way down.
Slowly return to the starting position and repeat.