Understanding the Power of the X Factor by Marianna Haun unlocks the genetic secret believed to give Thoroughbreds explosive racing speed. This 2001 paperback explores the "X factor" theory, tracing the cardiac gene through legendary horses and showing breeders, bettors, and enthusiasts how to spot future champions.
Written in clear, textbook style, Haun blends science with trackside insight, making racehorse genetics approachable for adult learners and young racing fans alike. From pedigree analysis to betting strategy, the 253-page guide doubles as a reference for horse-racing hobbies and professional development in the racing industry.
The book is in very good condition, with clean pages, tight binding, and no writing or dog ears. Light cover scuffs and small top-edge marks are the only signs of its previous life in a smoke-free home. A solid, ready-to-read copy for anyone keen to understand what really powers a racehorse.
Whether you’re studying animal training, updating your stable’s breeding plan, or simply love the thrill of the track, this accessible volume delivers practical racing insights without overwhelming jargon.
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