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If you’re at all like me, you’ve eaten a lot of junk food late at night. One explanation for those late-night slices of pizza or burgers has to do with alcohol, which has a disinhibiting effect that makes us crave fat and salt. But an increasing body of research suggests that exhaustion, too, plays a role — that the “sleep munchies” are real, at least in cases when people didn’t get enough sleep the night before. 是不是有小伙伴和我一样，晚上很晚的时候还要吃很多垃圾食品呢。有一个解释就是那些我们晚上吃的披萨和汉堡都含有酒精，而酒精则可以使我们更加渴望脂肪和盐。但是越来越多的研究表明，疲惫也会使人养成睡前吃东西的习惯，尤其是那些前一晚没有充足睡眠的人。 A new study in the journal Sleep in which participants were put on normal sleep or sleep-restricted schedules while their calories were carefully monitored. Allison reports:The new study, based on blood samples, documents a novel finding: The daily rhythm of a particular endocannabinoid is altered by a lack of sleep. 《睡眠》期刊中记录了一项实验，参与者分别被分到正常睡眠组和限制性睡眠组，并且详细监测了他们体内的卡路里。阿里森说这一基于血液试样的研究证明了一个新的发现：人体内的花生四烯酸甘油的含量会因缺乏睡眠而改变。 | 
