Exercise can help patients maintain lean body mass during weight loss. Although exercise is not extremely useful in shedding excess pounds, it helps keep off weight lost through calorie restriction. This article discusses the specifics of exercise prescription, types of exercise, motivation to exercise, and special problems such as diabetes. (SM)

Regular exercise is important for children's and adolescents' health maintenance, facilitating weight control, strengthening bones, and improving cardiovascular risk factors and mental health. Active childhoods help promote lifetime fitness. Physicians can assess children's weight and activity levels during routine exams. With simple…