Now those findings are correlational, meaning that it’s perfectly plausible that poor sleep is the result of these other problems, rather than the cause.

目前这些研究结果相互关联，也就是说，缺乏睡眠极有可能是以上这些问题的结果，而非原因。

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Get as much 'natural' sleep as possible, meaning that drugs and sleeping pills interfere with the natural repair of the body that occurs every night.

尽量进行自然睡眠，这就是说药物和安眠药会干扰身体在晚上的自然修复。

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Sleep apnoea owes its meaning to the Greek word apnea, meaning 'want of breath' and this condition affects the sleep of around 180, 000 people in the UK.

这个词起源于希腊语apnea，意思是“渴望呼吸”。这个病症影响着英国大约18万人。

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However, the team found that eventually both methods of memory retrieval were as effective in the tasks, meaning that while sleep deprivation affects brain function it does not affect overt behaviour, as previously thought.

BBC: Time spent in bed could make you a better gamer

Zich theorizes that one reason there are so many flu cases is that the heart of the flu season coincided with the December holiday season, meaning many people were already sleep-deprived from parties and were more likely to get sick.

CNN: Flu picks up steam across the U.S.