When it comes to working both the glutes and core, Pilates is a great option. The low-intensity workout focuses on small, controlled movements that target specific muscles. "Focusing on that control helps isolate the muscles being targeted and lets you work them deeper, which is what makes Pilates so good and effective for working the core and butt," Manuela Sanchez, certified Pilates instructor at Club Pilates in Brooklyn, tells SELF.