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天涼起不來床？地球人都這樣……又多了個賴床的理由！
Unitrans世聯
文章轉載自 21英語微商城 21世紀英文報
Hard to get up in winter
People often have a hard time waking up when it’s cold out. Why? A study on fruit flies (果蠅) might answer the question.
我們為啥總會覺得在天冷的時候起床更困難了？這項關于果蠅的研究或許可以幫到你！（你沒有聽錯，是果蠅）
The study found a “thermometer circuit (溫度計回路)” in fruit flies. It sends a message of coldness from their bodies to their brains. Through this circuit, coldness and darkness can stop parts of the flies’ brains from working, particularly (尤其) in the morning. These neurons (神經元) work to wake up the fruit flies. So it’s hard for fruit flies to wake up in the cold winter. Researchers said this might happen to people, too.研究發現，在果蠅體內有個“溫度計回路”，它可以把“好冷”這個信息傳到大腦。通過這個溫度計回路的“傳話”，果蠅可以在寒冷黑暗的時候讓大腦部分區域停止工作，尤其是在早上。所以果蠅很難在寒冷的冬天醒來。研究人員表示，人類不想在寒冷的早上起床，也許也是同理！
Sleep calculator
If you want to get up at 7 am, when should you go to bed? A smart sleep calculator (計算器) by UK company Hillarys can tell you. Head to bed at 9:46 pm, 11:16 pm or 12:46 am if you’re a night owl (夜貓子). Tell the calculator when you need to get up, and it will work out what time you need to go to bed. 如果你想在早上7點起床，那幾點睡覺合適？英國Hillarys公司的智能睡眠計算器可以告訴你答案。如果你需要在早上7點起床，那你可以在晚上9:46、11:16睡覺，如果你是夜貓子，你也可以在12:46睡覺。這入睡時間，怎么還精確到分鐘了呢？
Usually, human bodies sleep in 90-minute cycles (周期). You have four or five cycles each night. If you wake up during a cycle, you will feel tired in the morning. This makes it harder to get out of bed. The calculator also uses this information. It makes sure you wake up with a spring in your step (步伐輕快)!通常，人體的睡眠周期為90分鐘一周期，每晚會經歷四到五個睡眠周期。如果你在睡眠周期中被叫醒，你會醒的很“痛苦”，起床氣也隨之而來。睡眠計算器就是運用這一原理，助你“無痛起床”！
