HOW: Begin by standing on an elevated surface. While balancing on one foot, slowly lower yourself down and reach behind and past the foot that is on the elevated surface (if standing on left foot, reach behind and to the left past your left foot with your right). Just tap your foot like you're trying to not break an eggshell, return to starting position and repeat.
FEEL: You should feel your hip and thigh muscles on the leg that you're standing on, especially the muscles on the outside and back of your hip working to slowly lower yourself down.
COMPENSATION: Maintain good trunk control, control the movement and don't put all of your weight down on the ground when you tap the ground. Do not allow your pelvis to excessively drop.