Muscle Gaining Secrets is a mass building crash course that was made for hard gainers who have dream to gain weight. This addresses the needs of thin men who have a very sensitive central nervous systems and high metabolism. It is written in a easy no nonsense manner that makes it easy to understand. There are no scientific formulas or working out jargon that needs a degree to understand. Read this Jason Ferruggia Muscle Gaining Secrets Guide Guide review for a indepth info.