Set-up: Standing next to a cable tower with an ankle hold attached, place the ankle of your working leg inside the attachment. Make sure the attachment is secure and unbreakable. Take several small steps away from the object in a wide stance. Move to a distance where there is suitable tension in the working leg from the cable.
Lift: Start from a wide stance. Lift the working leg - the leg nearest the cable tower - a few inches off the ground while balancing on the off leg. Use the arms to stabilize against a sturdy object. With toes pointed upwards, move the working leg from the distant position to the mid-line and then across the body, as far as range of motion will comfortably allow. Repeat.
Repetitions: Perform all prescribed reps on one side, then on the other. This counts as one set.