" My metabolic rate is slightly over the Gethenian norm, as are my height and weight; Estraven had figured these differences into the food-ration calculations, in his scrupulous way, which one could see as either house-wifely or scientific, and from the start I had had a couple of ounces more food per day than he. "

― Ursula K. Le Guin , The Left Hand of Darkness (Hainish Cycle, #4)