Cover photo: imago sportfotodienst GmbH
Back cover photo: © Thomas Northcut/Photodisc/Thinkstock
Photos: see individual photos
Cover design: Sabine Groten
Medical Disclaimer: The information in this book is intended as a general guide, and in no way should be seen as a substitute for your doctor’s own advice. All care is taken to ensure the information is free from error or omissions. No responsibility, however, can be accepted by the author, editor, publisher, or any other person involved in the preparation of the material for loss occasioned to any person acting or refraining from action as a result of the published information. Before commencing any new health program, diet or exercise, always consult your doctor.