Proof3 - Salt River is the right choice if you’re looking for incredible results from your workouts. proof3 offers 60-minute small group training classes, with 30 minutes dedicated to strength training, and 30 minutes of cardio. The studio is equipped with high-end equipment, with the intention of helping you live stronger for longer. Our strength & conditioning training program, combined with our world-class coaching team are ready to help you achieve your goals. You need to book in advance to attend classes.