This reference book provides 20 real-life examples of how to implement the "Guidelines for School and Community Programs to Promote Lifelong Physical Activity among Young People," developed by the Centers for Disease Control and Prevention (CDC). The book also summarizes the CDC guidelines. Based on the recommendations from national policy documents, 16 experts, and 38 organizations related to medicine, physical activity, and education, the guidelines make a case for the need to promote physical activity among young people. The information is presented as 10 broad recommendations for schools and community programs, each followed by a more detailed description. Part 1 of this book highlights the CDC guidelines, offering background information on why they are needed and a complete listing of the guidelines and supporting recommendations. Part 2 presents the stories of 20 successful physical activity programs nationwide that represent a wide range of settings and target audiences. Each story explains how the program began, who started it, and what it took to get it going. Common elements in successful programs included having one interested individual leading the effort, meeting young peoples' interests, developing quality first, getting others involved, keeping people informed, assessing what is happening, including everyone, maximizing resources, and making no excuses. (SM)