Tone Your Tush With These Butt-Lifting Workouts

Want to work out with the trainer who keeps the Sports Illustrated models in tip-top shape? Of course you do! Justin Gelband is your man, because "the model whisperer" has prepped many familiar faces for the runway and major photo shoots. Learn his fitness philosophy while toning your butt with this 10-minute workout. You don't need any equipment for this sweat session, so no excuses!

Related: The Moves You Should Be Doing For a Perkier Butt