Set up facing an anchor point with a band wrapped around your shoulders and held in one hand. Stand in a staggered position with most of your weight on the side you're holding the band in a slight hinge at the hip. The anchor side of the band will be pulling on the side where your leg is stepped back. Keep your standing leg stable as you push through the whole foot including the big toe to open and close your hips. Keep your torso as one unit rotating through your hips, as this exercise is intended to connect your core with the hip rotation. You should feel stabilization through the core, but the main work of this exercise is in the deep hip rotators / glute on your forward leg.