This means your brain is actually able to perform better, making you more alert, focused and able to think at peak performance.

这就意味着你的大脑可以更好地运转，并且使你更加机智、专注，并且能在更佳状态下思考。

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Active rest helps you direct that rebuilding, so it goes more the way you want -- it, making you more productive, more alert, more relaxed -- and often looking and feeling younger, too.

CNN: How to relax at work