Dr Emily Balcetis' study suggests that visual focus and mental focus are connected.

艾米丽·巴尔西提斯博士的研究表明，视觉专注力和精神专注力是相互关联的。

But holding visual focus for long periods can be hard.

但是长时间保持视觉焦点是很困难的。

You may have already used the tactic of narrow visual focus without even noticing it.

你可能已经在没有注意到的情况下使用过缩小视觉焦点的策略。

Some of the best performers, those that run the fastest, run the furthest, they flexibly switch between a wide visual focus and a narrow visual focus.

一些表现最好的人，那些跑得最快的人，跑得最远的人，他们灵活地在宽阔的视觉焦点和狭窄的视觉焦点之间切换。

So, that change in visual focus was having a change in their mental focus and their self-appraisals of their ability to do this exercise.

视觉焦点的改变也改变了他们的精神焦点以及他们对自己能力的自我评价。

So there actually are a lot of instances when we do practice this kind of visual focus and we find that it improves our performance.

实际上有很多当我们练习这种视觉聚焦时我们发现它提高了我们的表现的例子。