關於睡眠時間可以看看這篇文章和相關文獻

https://www.helpguide.org/articles/sleep/sleep-needs-get-the-sleep-you-need.htm#:~:text=According%20to%20the%20National%20Institutes,recipe%20for%20chronic%20sleep%20deprivation.

其中有一段

Are 6 hours enough sleep?

For most people, no. Researchers at the University of California, San Francisco, discovered that some people have a gene that enables them to function well on six hours of sleep a night. This gene, however, is very rare, appearing in less than 3% of the population. For the other 97% of us, six hours doesn't come close to cutting it.