My mat and sleeping bag on the hangar floor will not be too uncomfortable but huge cargo planes roaring down the runway just a few hundred yards away might make it for another long night.

垫在飞机棚地板上的垫子和睡袋感觉还可以，不过几百码外大型货机滑入跑道的轰鸣声让今晚成为又一个漫长之夜。

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Sleeping longer than you need to will weaken your sleep system, as you reduce your prior wakefulness, exposure to sunlight, activity levels, and your body temperature at a low for too long.

睡得比你所需应该睡的时间长了会减弱你的睡眠系统，当你降低了你先前的觉醒度，暴露于阳光中，你的活动水平和你的身体体温都处于低水平太久。

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Sleeping too little or for too long disrupts how we think and can age the brain by up to seven years, the findings show.

研究发现，睡的太多或不足都会扰乱人的思维，并最高可使大脑衰老7岁之多。

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