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by wayoverthecloud 588 days ago
What about sleeping more than 8 hours? Is there any research done on this? Will this affect negatively? I sleep 8-9 hrs most days. (No, I am not depressed or anything but I don't drink coffee or any stimulant to keep me awake so I get really tired at the end of the day.)
2 comments

> Experts recommend that adults sleep between 7 and 9 hours a night.

https://www.nhlbi.nih.gov/health/sleep/how-much-sleep

Absolutely nothing wrong with sleeping between 8 and 9 hours, you're actually exactly in the healthy range.

I have the same profile : no caffeine or other stimulants, good volume of physical activity; I don't need any reminder to go to bed, I get the obvious the call by being quite tired.

Discussing sleep with people, I found two types that are dominants:

- people who heard "between 7 and 9 hours" and remember "8 hours" (can't say they're wrong here!) - people who heard "between 7 and 9 hours" and remember "the goal is 7 hours", and actually sleep between 5 and 7 hours

Yes, it seems bad, 'Sleeping too much puts you at greater risk of coronary heart disease, stroke and diabetes than sleeping too little. https://pmc.ncbi.nlm.nih.gov/articles/PMC8727775/
The paper doesn't really say that. Summary:

> The study concludes that while individuals may initially sleep more when given extended opportunities—likely to recover from prior sleep deprivation—they do not sustain excessive sleep beyond their physiological needs. Consistently sleeping more than 10 hours may indicate underlying health issues and warrants further investigation.

So more than 10 hours might indicate a problem, not 8-9 hours. Also, it's different if people work out a lot or have a physically demanding job:

> For athletes or individuals with high physical demands, 10 hours of sleep might not indicate an underlying health issue but rather an increased physiological requirement. Research has shown that elite athletes often sleep longer than the general population. (this is not from the paper but from a quick search)

This doesn't even remotely pass the sniff test. Eight to nine hours of sleep is a healthy range confirmed by many studies the world over.