Start standing with both feet flat on the ground. Bring your left forearm to the chair/support and place your right hand on your hip.
Slightly hinge (bend) forward towards your chair, keeping your abs engaged. Lift the right leg up straight behind you, keeping your hips slightly open. Be sure to maintain an upright posture and a neutral spine.
Slowly draw your right knee in towards your shoulder, then extend the leg straight out to the side, then slowly slide the leg back behind you. Your leg should be straight throughout the entire movement. Make sure to stay tall and avoid arching or bending at the spine.