Nick Tumminello, known as the "Trainer of Trainers," is the owner of Performance University, which provides hybrid fitness training for athletes and educational programs for fitness professionals worldwide. He has worked with a variety of clients, from NFL athletes to professional bodybuilders, figure models and exercise enthusiasts. He's also served as the conditioning coach for the Ground Control MMA Fight Team. Tumminello has produced 15 DVDs, and he's a regular contributor to several major fitness magazines. He lives in Fort Lauderdale, Florida. Check out his products, seminar schedule and blog at PerformanceU.net.