Book excerpt: Exercise can help prevent and treat a wide variety of health problems, including obesity, heart disease and mobility disorders, and fitness professionals are increasingly working with referred patients as part of their treatment. Formerly published as Fitness Professionals: GP Referral Schemes, the new edition of this established and definitive guide includes the latest information from sources such as NICE and ACSM as well as a new chapter on session plans to provide fresh ideas for working with your clients. Written by a highly experienced exercise professional, this book covers: exercise guidelines for different medical conditions strategies for working with exercise referral clients approaches to activity and programme design health, safety and risk management.