For canoeist athlete and bioengineer Mihály Sáfrán, the fashionable term 'paleolithic' nowadays doesn't just mean a type of nutrition, but a whole mindset, a way of life. In his first book, the author presents some human tribes and animal species living in natural conditions, then discusses the environmental influences - including nutrition - from which modern humans have strayed significantly compared to them, and links these to civilization diseases. What is the connection between cold, barefoot walking, electricity, night lighting, and sports with health? Where is human evolution heading in our days? These questions are addressed in the book. By reading through the book and following the practical advice, it is likely that we can bid farewell to obesity, fatigue, and most illnesses; every individual can bring out their full potential, which may be particularly interesting for athletes. The book is written in a scientific manner but strives for an understandable presentation, aiming to be a useful read for every person living on the planet Earth who wishes to live healthily for a long time.