Difference in time zone, jet lag, lack of morning coffee - are frequently cited reasons as to why you're especially grouchy.

时区的不同、时差、或者没有早茶，这些都是经常会引起你特别不高兴的原因。

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What gets you in the zone? What gets you feeling ready? A cup of coffee? Preparation and review? Playing a game on your phone?

什么能让你进入状态？什么能让你准备就绪？一杯咖啡？准备和回顾？手机上玩个游戏？

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Leading the rebels is Libreria Books in London's East End, which is a Wi-Fi - and coffee-free zone.

这场反抗的领军者是伦敦东区的Libreria书店，这里没有无线网络，也没有咖啡。

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Its 500 producers, who speak only Keqchi and Pokomchi, grow coffee and cardamom on shady forested plots in the buffer zone of the magnificent cloud forest of Sierra de las Minas.

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Most travelers arrive in a new time zone, take a sleeping pill to fall asleep at bedtime, drink coffee during the day to stay awake, and wait it out until they feel better, says Charmane Eastman, a professor of behavioral sciences at Rush University Medical Center in Chicago, who has devised strategies for people seeking to minimize jet lag.

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