When not sweating onscreen in workouts for MTV and the TV Guide channel, Justin helps students of all shapes and sizes achieve stronger, leaner bodies with the aid of the pilates reformer machines at his studio. A system of ropes, springs, and pulleys, the reformer machines pit students against their own body weight to create resistance-based exercises. Students work their way toward lean and flexible physiques while improving their balance and posture and decreasing tension. Leading group classes, Justin ensures each participant is executing correct technique and not pocketing any reformer machines for home use.