They're always on the up side of life," says Dr. Buysse.
总是乐观向上”，拜瑟博士说。
When people are asked how long they sleep, they usually report howlong they spend in bed, Buysse said.
当问人们睡多长时间时，他们通常汇报的是他们在床上呆的时间。
Buysse also disagreed that sleep was like food, arguing that while people can restrict sleep, they cannot "choose" to sleep longer.
Buysse也不同意睡眠如饮食的观点，他反驳说虽然人们可以限制自己的睡眠，他们却无法“选择”睡得更久些。
Out of every 100 people who believe they only need five or six hours of sleep a night, only about five people really do, Dr. Buysse says.
每100名自认为每晚只需睡5或6个小时的人里面只有5个人的确如此，拜瑟博士说。
Out of every 100 people who believe they only need five or six hours of sleep a night, only about five people really do, Dr. Buysse says.
每100名自认为每晚只需睡5或6个小时的人里面只有5个人的确如此，拜瑟博士说。
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