one of the most groundbreaking books you can read on understanding the science of muscle building, sets, reps, tempo, frequency, volume & intensity and other variables. At the same time, legendary coach Poliquin describes in detail about each body part separately and how you can best target these parts for maximum development. Information has grown exponentially since The Poliquin Principles was first published in 1997. There was valuable information in the original Poliquin Principles, but as information grew updated editions were needed. The book is revised now and is available in ebook format. The only issue may be with the supplemental protocol given at the later section of the book, as there has been quite a few discoveries in supplemental research and most supplements previously thought to be beneficial were found to be absolutely useless for sports performance, muscle building or fat loss.