Sophie Guidolin is a nutritionist, master trainer, gym owner, author and world-renowned fitness model with numerous titles, most recently taking gold at the Arnold Classic. Her passion for health began after her first pregnancy, when she gained 28 kilos and developed gestational diabetes due to her unhealthy lifestyle. She started weight training, changed her diet, and over 12 weeks shed 30 kilos. Sophie has developed numerous workout and nutritional plans, transforming the lives of thousands of people. She now has one million social media followers and is dedicated to leading a healthier, more active lifestyle. Nathan Wallace is an elite strength and conditioning coach, INBA Mr Natural Olympia, husband and father of four. Together with his wife, Sophie Guidolin, Nathan runs Hold Your Own, one of Australia's biggest online fitness and nutrition coaching brands, with a training facility on the Gold Coast. He is co-founder of The Bod 12-week body transformation programs for men and women, a qualified sports nutrition specialist, recomp specialist, and an elite coach with certifications in powerlifting and strength and conditioning.