Best Scottsdale Arizona Personal Fitness Training - Nutrition And Medical Exercise AZ. Rivak Hoffman is a nationally known personal trainer and fitness and nutrition expert. Originally his thriving business began in San Diego CA where he managed the health and fitness lifestyles of 22 of Southern California’s busy, powerful businessmen, physicians and politicians for well over 18 years before relocating to Arizona. Rivak brings to Arizona advanced levels of knowledge in the areas of difficult weight loss, corrective exercise, sports conditioning and personalized nutrition, thus enabling him to help you look your best, feel functional and healthy and compete competitively in any sports without repetitive injury. In just a short period of time Rivak has become recognized as one the most recognized and best personal trainers in Arizona.