Chris and Heidi Powell, hosts and transformation specialists from the hit TV show, Extreme Weight Loss, now share their proven, life-changing, step-by-step guide for losing weight and keeping it off in their first co-authored book, Extreme Transformation.

They are the hosts of television's most popular weight-loss documentary show, Extreme Weight Loss, and now the Powells provide a blueprint for changing your health in just 21 days. Whether you're looking to lose the baby weight, that last ten pounds, or several hundred, this is...