论与一般人群比较，中学生思睡的发生率极高，提示睡眠时间严重不足，午睡可改善其困倦现象。

Conclusion Students in high school showed higher rate of longing for sleep, and this implicated they fall short of sleep time greatly and siesta could improve their sleepy signs.

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“好了，”阿不福思说，这时他们已经吃饱喝足，哈利和罗恩昏昏欲睡地瘫坐在椅子上，“需要想个最好的办法把你们从这里转移出去。”

"Right then," said Aberforth when they had eaten their fill, and Harry and Ron sat slumped dozily in their chairs. "We need to think of the best way to get you out of here."

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食物中的蛋白质让人清醒，而碳水化合物让人困倦思睡。

Protein in meals stimulates wakefulness, while carbohydrates promote sleep.

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