Regardless of the sloppy translation, this is the book that anyone who practiced the indoor sport should have ... never to return! The methods described work provided you follow the steps above and not skip, before reaching the standard progression. There is nothing revolutionary in this book two months ago and yet I feel like I rediscovered my body ... work to body weight helps develop healthy muscles, tendons and bones included ... However this Book is only for motivated individuals previously disgusted by modern fitness methods costly and ineffective ... And I thought to be strong I quickly realized that my level was poor or very bad ... Finished proteins that ruin kidney and stomach, muscle isolation excercises that build a body disharmony ... I recommend this book primarily for combat sports practitioners (but also to the grannies over fifty years) It is the proper complement. PS: please read the descriptions not dry on some excercises (eg the right is bridged with legs apart, and it is impossible to achieve the knees one against the other) Follow the steps ... but logical progression is slow (weight training is based on a long process, tendons take longer to strengthen muscles to swell) ... Skip a step could lead to injury Use the first steps to warm up afterwards ... Do not lose hope, persevere ... Train only you, be as serious as cancer ... Become a colossus ... Long live caliesthéniques!