The goal of this book was to interview highly qualified personal trainers who really train clients each and every day of their professional lives. Inside this book, you're not going to find interviews with "celebrity" fitness trainers. As you probably realize, most "celebrity" fitness trainers do very little day-to-day fitness training, because it conflicts with their schedules of book signings, producing DVDs, and filming television shows. It's sad to say, but many great personal trainers stop being great personal trainers the moment they get "discovered" by the "machine" that is the fitness and nutrition's marketing industry. Consider this book to be the opposite of those glitzy, celebrity-endorsed books. When we produced this book, we set out to find real world experts and that's exactly what we got. Our biggest challenge was getting these personal trainers to break away from their busy schedules of training their clients, so that they could actually share their advice in this book. The trainers who have contributed to this book "walk the walk," and the content they've provided in this book reflects their true knowledge and expertise.