This forces your heart to work double-time in order to push the necessary blood to your organs, which will result in noticeable mental fatigue.

这迫使你的心脏为了将血液输送到各个器官而加倍工作，结果造成明显的精神疲劳。

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Or even producing double the amount of work you do now in the same amount of time.

或者说，甚至在同样时间内完成你现在所做工作的双倍工作量。

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Or even producing double the amount of work you do now in the same amount of time. It's not only possible to do, but very simple.

或者说，甚至在同样时间内完成你现在所做工作的双倍工作量。这不仅仅是可能实现的，而且相当容易实现。

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