I've been blessed—and cursed—with a fast metabolism that means my blood sugar runs low every hour unless I eat something. (My family members have been known to faint on planes because they forget to eat breakfast.) For this reason, I need energy that keeps me full longer, especially on those days when I have to work through breakfast—and though I hate to admit it, through lunch even. This autumnal trail mix got me through school, which is why I've coined it student fodder (appropriately, from the German studentenfutter, or "student feed"): pistachios, pumpkin seeds, golden raisins, and dark chocolate—a careful study in balance; salt, sugar, and fat.