Dr. Roizen's books reveal simple lifestyle changes that have profound effects on the aging process. This book explains the importance of gradually phasing exercise into your everyday routine, because even the smallest changes in behavior can make you feel, look, and be younger. No matter how busy your schedule, Dr. Roizen shows how to gain the maximum benefits from a minimum amount of time and effort. He offers a series of calculations that factor in age, genetics, and lifestyle so you can determine your overall health and create a program. The workout then begins--just by walking 30 minutes a day, you can significantly improve your overall health and have more energy. After you've adjusted to this, the book will guide you through a series of training phases during which you will steadily develop your foundation muscles and eventually add a stamina-building program to help you maintain improved health.--From publisher description.