一百万人都同意：睡五小时好过睡八小时

1 Million People Agree – Sleeping for 5 Hours is Better Than 8

一百万人都同意：睡五小时好过睡八小时

You’ve heard it before: “Everyone needs 8 hours sleep per night.”

之前你一定听过这句话：“每个人每晚都需要8小时的睡眠。”

Well, a study out of UCSD paints a different story. The 2010 paper instead suggests that the secret to a long life lies in getting just enough sleep, which ends up being about 6.5 hours per night.

但是，加州大学圣地亚哥分校的研究在这个问题上给了我们一个完全不同的答案。这份2010年的论文反而认为，长寿的秘密就在于拥有刚刚足够的睡眠时间，也就是每晚6.5小时。

The study looks at 1.1 million people’s sleep patterns over the course of 6 years, tracking the amount of sleep each subject averaged alongside their longevity. Its major finding: Sleeping as little as 5 hours per night can be better for you than sleeping 8.

这次研究调查了110万人六年中的睡眠模式，追踪每个受试者的平均睡眠时间和寿命情况。 研究的主要发现是：每晚睡5个小时比睡8个小时更好。

How much sleep do you really need?

你究竟需要多少睡眠？

The study, run by Dr. Daniel F. Kripke an MD and Professor of Psychiatry specializing in sleep research and aging, didn’t find any statistical health-related reason to sleep longer than 6.5 hours per night.

该研究由Daniel F. Kripke博士和专业从事睡眠研究和衰老的精神病学教授负责，研究没有发现每晚睡眠时间超过6.5小时的任何统计学上的与健康相关的原因。

Data that he used from the Cancer Prevention Study II (CPSII) from the American Cancer Society even shows that sleeping about 5 hours per night is slightly safer than sleeping 8. In this case, we’ll go ahead and define “safer” as “not dying.”

他从美国癌症协会的癌症预防研究II（CPSII）中使用的数据甚至表明，每晚睡眠约5小时比睡8个小时略微更安全。在这种情况下，我们将“更安全”定义为“没死”。

The data is impressive. It covers 1.1 million participants, and it is the first large-scale population study that correlates sleep with longevity while taking into account things like age, diet, exercise, health problems and smoking.

这项数据令人印象深刻。 它覆盖了110万参与者，这是第一次将睡眠与长寿联系起来的大规模人口研究，同时考虑到年龄、饮食、运动、健康问题和吸烟等问题。

The data is from 1982-1988 because it took years to input the data and perform analysis on it.

数据来自1982年至1988年，因为输入数据并对其进行分析需要数年时间。

I’m not sure where the sleep-8-hours-per-night myth came from, but it’s totally wrong. You can file it away under old information, along with the eat-fewer-calories-to-lose-weight myth.