Experts say that when people are faced with an all-you- can-eat buffet, they eat more because they think they are getting more for their money. They often forget they are paying the same amount whether they eat just what they need, or everything they want. In fact, behavior like this puts people on the same level as laboratory mice. When mice are faced with many different foods to choose from, they too cannot help but overeat.

专家表示人们在吃"尽兴吃"自助餐时往往会吃的比较多，因为他们认为这样他们花的钱才划算。他们常常忘了，不论他们只吃自己所需的份量，还是他们想吃什么就吃什么，付出的钱都一样多。事实上，像这样的行为把人和实验室用的老鼠放到了同一水准上。当老鼠面对各种食物可以自主选择时，它们也会忍不住吃得过多。

(短文节选,本篇始于：大饱口福，莫忘健康)