"Physical exercise is an absolutely necessary activity that provides us with great reserves of energy. Our innate tendency towards running is due to the fact that it is an activity deeply ingrained in our cells from ancient times. Within us lies the wild passion of the stride and the spirit of the runner..."

"Each article in this book is the distillation of cross-referenced and condensed knowledge from reputable medical journals on sports content. It does not contain infallible truths but is open to opposing views, which do not counteract but rather contribute to better understanding and reflection. The behavior of the body during long-distance running is a relatively unknown field of research, and the more you delve into it, the more questions arise, revealing its hidden dynamics."