In this book by Vilhjalmur Stefansson, he describes his exploration of the Eskimo culture, and their high protein high fat diet. This book lead to his writings in both Not By Bread Alon and Fat of the Land, two classics books which influenced bodybuilding diets, and gave birth to ketogenic diets later on. These books by Stefansson also heavily influenced both Vince Gironda and Rheo Blair and their nutritional principles for bodybuilding. 690 pages, Enjoy!