If you need a nap, nap no more than 15 minutes (a power nap). Anything longer can make it much harder to fall asleep in the evenings.

如果你要午睡最好不要超过15分钟(闭目养神)，睡的时间越长会让你晚上越难入睡。

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For many years he has insisted on working no more than eight hours a day and he even has a 20-minute nap on weekdays.

多年来他坚持每天工作不超过八个小时，甚至每天都会午睡20分钟。

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My nap experience was no different than if I took a nap while following a common monophasic sleep pattern.

我在单相睡眠的时候，如果打盹也是类似的感觉。

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While the nap is supposed to last no more than 40 minutes, the first officer slept for 75 minutes and woke up feeling unwell, the report states.

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Three days later General Galtieri was awakened from a nap and, clad only in his underwear, told that he was no longer president.

ECONOMIST: Leopoldo Galtieri | The

He goes on to suggest how you might even find taking a daily nap more productive in the long run than doing things that bring little to no return, packing into eight solid hours something greater than any 50-hour work week could produce in the big scheme of things.

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