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I got used to sleeping for only 6 hours or sometimes less. Is that bad? - Quora
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Elon Musk Says He Is 'Fairly Nocturnal' and Usually Sleeps for 6 Hours
Three quarters of Brits get less than eight hours sleep | YouGov
Why You Can't Sleep Longer Than 6 hours.. and How to Fix It - Sleeping.Guide
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Is 6 Hours Of Sleep Enough - How Much Sleep Do You Need By Age | Nectar Sleep
Only 5 Hours of Sleep? It's Worse For You Than You Think
Only 5 Hours of Sleep? It's Worse For You Than You Think
Short sleepers' can get just 4 hours a night and feel fine. But is their health at risk?
What will happen if you sleep for less than 6 hours? | HealthShots
