Stand on your left leg with your right leg behind and right toes resting on the floor. Bend both knees slightly and place your hands behind your head allowing your elbows to open wide.
Pull your abs toward your spine and keep your back straight as you hinge forward from your hips until your torso is almost parallel to floor.
With a flat back, press through your left heel and return to standing. As you do this, twist your torso (shoulders included!) to the left over your front left. Be sure to keep your pelvis and hips still and facing forward. This completes one rep.