"Kabloona: Among The Inuit"

Sounds fascinating:

"He’s also amazed by the endurance of the Eskimos. The nutritionists who parrot their textbook knowledge that 'you need carbohydrates for energy!' should read this book. Poncins recounts running along trails with Eskimos for hours – he was fatigued and panting, while they barely seemed to notice the effort. After a year in the Arctic, Poncins finds he is beginning to prefer their diet, even though he had supplies of 'white man' food on the sled carrying his belongings. As he explains in one passage, boiled rice could warm him up temporarily, but then he’d feel colder an hour or two later. By contrast, raw meat or raw fish was cold going down, but then he felt warmer for the rest of the day."