This is a great exercise to shape up your glutes and legs it is recommended to do 2 sets of 12 repetitions to start.
Step up kick back.
Step up and kick back onto chair bench duration.
This exercise works both the adductors and abductors but the kickback targets the glutes to add difficulty use ankle weights.
This exercise will also help you get a better balance to increase its effectiveness you can add weights and a higher step.
Stand to the left side of an aerobic step or box.
Step sideways onto the box with your right leg only then contract your abs and squeeze your left glute as you bring your straight left leg behind you in a kickback motion.