Whether you are looking to increase muscle size, strength, endurance, or overall athletic performance, William Llewellyn´s Sport Supplement Reference Guide is your key to maximizing results, minimizing costs, and avoiding disappointments. Authored by one of the most trusted researchers in the field, the Sport Supplement Reference Guide is an in-depth review of the most popular performance supplements availabe. With more than 500 medical citations, you´ll see for yourself what ingredients are backed by credible independent clinical studies, and which ones are based only on empty promises. You´ll also discover how and when each supplement can be used to its absolute maximum potential. The SSRG puts the world of performance science right at your fingertips, and takes the frustration and guesswork out of sports supplementation.

About the Author:

William Llewellyn is a research scientist, writer, and lecturer in the field of human performance enhancement. He has authored nine books, and written countless articles for many leading magazines, including Muscular Development, where he has been a longtime contributor and monthly columnist. Llewellyn has also been featured on the cover of ESPN Magazine, The Washington Post, and made numerous television and radio appearances for his expertise on performance enhancing substances.