under non-stress conditions,

无压力情况下吃到的食物
the one hypothesis is that if you're stressed, your physiology changes

某假说认为在压力下生理上会有变化
so you derive more pleasure from those foods.

因此你需要更多这样的食物来令你开心
It could be that the foods have a whole different biological effect

也可能食物会引起与我先前所提
than what I just mentioned,

完全不同的生物学效应
and that would the ability to calm down this arousal

能够使得原本心情糟糕的人们
that gets produced in people by feeling bad.

由烦躁变安宁
When you're stressed,

当你处于压力之下时
your body is aroused.

你的机体就变得亢奋
You've all heard of the fight or flight thing,

你们应该都听说过"打架或逃跑"反应
your body is aroused,

机体变得亢奋
that becomes an unpleasant state for most people,

那对大多数人来说都是一个难熬的阶段