This photocopiable book provides a complete learning module on fitness for Physical Education students. The information and investigation activity sheets are based on up-to-date scientific concepts and methodology presented in an accessible and easy-to-follow way. Students work through structured activities as they investigate their own fitness levels and then design and complete a training program which is relevant to their own sport or leisure pursuit. The book contains sections on energy sources, fitness components, heart rate and fitness, measuring fitness, and exercise and training.