Only if you sleep less during the day.

只有你白天少睡一点。

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If you get an hour less than a full night's sleep, you carry an hour of sleep debt into the next day - and your tendency to fall asleep during the daytime becomes stronger.

倘若某个晚上少睡一小时，一小时的睡眠债就被带到第二天，白天越来越想睡觉。

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After seven to eight weeks of more sleep, the players ran faster in short training RACES. They also felt less sleepy during the day.

经过七到八周充足的睡眠后，球员在短期培训赛跑中跑得更快。在白天他们也不会感到困。

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