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.
Step up with a kick back.
How to do a dumbbell step up with kickback exercise demonstration video and guide duration.
This exercise will also help you get a better balance to increase its effectiveness you can add weights and a higher step.
This exercise works both the adductors and abductors but the kickback targets the glutes to add difficulty use ankle weights.
Lindsey milam 129 190 views.