And because we already had evolutionary pressure to sleep, the theory goes, the brain evolved to use that time wisely by processing information from the previous day: acquire by day; process by night.

既然因为我们已经有了睡眠的进化压力，进化理论说明，大脑就进化到明智使用睡眠时间来处理前一天获得的信息：白天获取，夜晚处理。

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I had to sleep face down for the first month to give the "buckle" time to heal in its normal position.

我不得不在第一个月仰面而睡以便能够给“小扣带”时间让它恢复到正常的位置。

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"Normally, I only sleep maybe two hours a night because she wakes up and she wanders and she turns on the stove," says Howard, who eventually had to quit her job to take care of her mother full-time.

“一般来说，我一晚上也许只能睡两个小时觉，因为老妈经常醒来到处徘徊，她有时还把炉子打开，”霍华德说，她最终不得不辞去工作，全职照顾她的妈妈。

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It took a long time for the disposal squad to make the bomb safe and during that time, the Ross family had to sleep deep down, on the platforms of Southgate Tube station.

BBC: Stanley Ross remembers the Blitz

By the time I went to sleep last night, Colin Barr at Fortune, among others, had called it a bad idea.

FORBES: Selling America