`This is timely and will be of special interest to health service managers and members of primary care groups because the successful promotion of regular physical activity is a challenge contained in the strategy of Our Healthier Nation and is a candidate for incorporation into health improvement programmes and the service framework for coronary heart disease' - Health Service Journal This crisply written and thought-provoking book integrates theories and studies from several disciplines to examine what is known about physical activity and health. The authors use a behavioural epidemiology framework to organize the book and explore such topics as: physical activity and the health of ch