Published August 17, 2015 06:47PM

Squats and lunges are great for building your glutes, but they can miss your gluteus medius—or the side of the butt. Those muscles are key in the quest for a firmer derriere.
David Kirsch, founder of David Kirsch Wellness Company and author of the upcoming book, David Kirsch’s Ultimate Family Wellness: The No Excuses Program for Diet, Exercise and Lifelong Health (December 2015), has three signature moves that will tighten the side of your tush and lead you to a better butt.