we want you to go on a two mile exercise walk,

我们要你走两英里
then you get your lunch.

再吃午餐
So they walked this nice walk around this lake, it was about two miles.

所以他们绕着湖大概走了两英里
We took this other group we said,

对第三组我们说
what we want you to do is we want you to go--

我们想要你去
we want you to test out this iPod

我们想要你试试这个音乐播放器
to see how clear the music is on this walk.

在走路过程中音乐的清晰度怎样
So they went on the exact same two mile walk,

于是他们也走了相同的两英里
but they--it wasn't coded in their mind as exercise,

但在他们心里觉得这不是运动
it was coded instead just as they're doing something kind of fun,

而是一件有趣的事情
then they came back and ate too.

然后他们回来后也吃了东西
The thing is it seems that

结果看起来