If you often don't sleep well at night, and the next day I feel the need for a nap can energetic, may you have formed the bad sleep habits.

如果你常晚上睡不好，第二天感觉需要小睡一会才可以精力充沛，可能你已经养成了不良的睡眠习惯。

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Some of the most recent research suggests that a bad night's sleep can stress the body as well as the mind.

一些最新研究表明，夜里睡不好会增加身心压力。

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"Bad sleep" means unease sleep, having two meanings: can not lie on the back, and can't sleep well.

卧不安“即不安卧之谓，更含两重意义，不能平卧与虽卧不安两者皆属。”

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The businessmen of The Bad Sleep Well (1960) are samurai in business suits, gangsters in skyscrapers, with a code of honor no less remorseless.

CNN: ASIANOW - TIME Asia

He is a rumpled but unflappable traveller, seemingly oblivious of bad weather, uncomfortable transportation, and lack of sleep, as well as of the antiwar protesters who tend to appear wherever he goes.

NEWYORKER: The Next Crusade