For over 25 years I am passionate about all that concerns muscular work, especially strength sports. I would have liked "this" book to me when I started. So for anyone starting out is "the" book to buy, to read, to test, to reread and again. For others, like me, this book will give them a new look at muscle work, tracks, confirmations or invalidations. For everyone, male or female, beginner or not, whatever their sporting specialties, it will prove to be a valuable and intelligent guide.