I appreciate strongly this book :
It is written by 2 PhD & (long) distance runners & coaches (and 1 journalist )
It provides organized and valuable scientific informations ( the studies supporting the conclusions or indications are indentified )
It diferenciate what is proven, and what is assumed.
Of course, it is written for a very large public, and no background is required in biology or medical science.
The book is organized in 5 parts (musculoskeletal syst./Cardio respiratory syst./ Metabolic syst. / Central nervous syst. / Immune syst.) of 30 to 40 pages each ; where can be found focused and accurate informations ( for example, as a short sample, I notice : "developing more resilient legs" // "palletofemoral pain syndrom; description and causes; training through it; treatment and rehabilitation"// "the importance of speed work" // " a black swan in fluid intake: reason to challenge the paradigm" ( a very necessary explanation about deshydratation, what it is and what it is not, and the important question of hyponatremia, and a clear point about biased drinking advices yet regularly adress to runners ) // .."sports Drinks: an ineffective Method of replacing Sodium " // ...// "running technique: earning Style points" // .. "runner's high" ; "better than prozac " (a summary about neurotransmetters produced during exercise, and their potential effect on mental health and condition ) // "radicals and inflammers" "free radicals, anti oxidants and muscle damage" // ...
As a whole, it allows a deeper understanding of the biology of training and recovery, with supporting scientific argument clearly identified (and weighted), and clear & practicable advices.
It does not provides a detailed training program for the 10K or the marathon (whih can be found in numerous others books) but a general accurate background which will help the runner to understand and improve any training.
As a whole, being a 50y old recreative runner (40K / week) since 8 years, after reading 5 or 6 books written by long distance runners; I found this book unique because it provides a true scientific insight .