People who awake in the middle of the night from sleep apnea are unable to complete normal sleep cycles, a time when the body naturally lowers hormone levels and blood pressure.

正常睡眠的时间里，人体能保持较低的激素水平和血压。而半夜由睡梦中因为呼吸暂停醒来的人就不能继续正常的睡眠周期。

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During REM sleep, our brain waves-the oscillating electromagnetic signals that result from large-scale brain activity-look similar to those produced while we are awake.

在REM睡眠期里，我们的脑电波(由大规模的脑力活导致的振荡的电磁信号)貌似与我们清醒时所产生的脑电波雷同。

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The study found that when you sleep, your brain removes toxic proteins from its neurons that are by-products of neural activity when you're awake.

该研究表明大脑清醒时神经系统活跃，神经元会产生有毒的蛋白质，当你睡觉时，大脑可将这些副产品清除。

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The new machines boot up in less than 15 seconds, and awake from sleep mode instantly.

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He also suffered from sleep apnoea, a condition that resulted in him jolting awake several times a night due to breathing problems.

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Some people find that either increasing or avoiding certain foods (such as eating more protein to stay awake or more carbohydrates when trying to sleep) can help them recover more quickly from jet lag.

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