很少有能持续一小时的。” 他说。

There's very few that last up to an hour, " he said.

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在完成了包括四节课、每节课一小时的课程后，他们持续表现出积极身体状态的态度，时间长达三年。

And they continued to exhibit positive body-image attitudes as long as three years after completing the program, which consists of four one-hour sessions.

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有研究表明，在持续地集中注意力一小时后，你的大脑需要休息。

There is research that shows that after about an hour of intense focus, your brain needs a break.

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