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.
Step up kick back.
How to do a dumbbell step up with kickback exercise demonstration video and guide duration.
Step up and kick back onto chair bench duration.
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.
This is a great exercise to shape up your glutes and legs it is recommended to do 2 sets of 12 repetitions to start.