If you work a late shift or travel frequently, your sleep cycles could be off.

如果你的工作时间是在夜里，或者是经常出差，你的生物钟很可能会被打乱。

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The research team, led by Duffy and advisor Charles Czeisler, studied the sleep cycles of 52 women and 105 men for two to six weeks in the lab.

达菲和查尔斯·蔡斯勒带领的研究团队在实验室对52名女性和105名男性的睡眠周期进行了2 - 6周的研究。

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Coffee later in the day also disrupts our sleep cycles, which continues the vicious cycle of waking up feeling unrested and needing that cup of joe to wake yourself up.

在晚上，咖啡也会扰乱我们的睡眠周期，持续着睡不着无法休息好，然后又只能用咖啡提神的恶性循环。

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Warped or otherwise, I decided to give QS a three-month test drive, downloading Android apps and outfitting myself with devices to track my mood, sleep cycles, calories, location, spending and productivity.

FORBES: Magazine Article

In another experiment the researchers wake up sleeping mice by sending a light signal to the hypothalamus, the brain's controller of sleep-wake cycles.

FORBES: Magazine Article