One of the best-understood examples of non-nutritive eating is the fact that stress tends to make us eat more. It makes sense psychologically, in that the people most prone to stress eating are those most actively restricting food intake the rest of the time: When the going gets tough and they need to be nice to themselves, this is how they ease up. They prefer to eat fats and carbs. If the boss is a creep, why not run wild on the chocolate-covered walrus blubber?

非营养性进食最容易理解的一个例子，是压力往往导致我们吃得更多。这可以从心理学角度解释，最容易在压力下进食的人，就是平时最积极限制进食的那些人：当处境不顺、需要善待自己的时候，进食便是他们放松的方式。他们更喜欢摄入脂肪和碳水化合物。如果老板是个混蛋，不如狂吃包巧克力的海象肉吧？

But we can't trace these habits merely to the complexities of the human psyche, because it's not just humans who exhibit them. Stress a lab rat by, let's say, putting an unknown rat in its cage, and it will eat more and show a stronger preference for high-fat/high-carb options than usual.

但我们不能把这些习惯一股脑儿地归到人类心理的复杂性上面，因为表现出这些习惯的不只是人类。给一只实验鼠施加压力（比如在它的笼子里放一只陌生老鼠），它就会吃得更多，并且比平时更加倾向于吃高脂肪、高碳水化合物的东西。

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