Levels of the steroid hormone cortisol, the same hormone that rises when you're stressed, hit their peak when you wake up in the morning but dip to a low by afternoon.

类固醇激素皮质醇，亦即你感到有压力时分泌会相应升高的那种激素，在你早上醒来时达到最高点，但到下午就降低。

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I used to think that I had to wake up at a certain time to be successful, but I realized that my peak time of productivity is from 10 PM to 4 am.

我曾经认为，要想成功，我必须在每天某个时间点起床，但后来我意识到，我工作效率最高的时间是在晚上10点至凌晨4点。

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Post-Peak Apple though America needs to wake up.

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Verizon, a local fixed-line and cellular carrier that serves both Washington and New York, among other cities, said calls to the area doubled from their normal peak volumes of 115 million in New York and 35 million in Washington in the wake of the incidents.

CNN: Networks hit, but telecom stays operational