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https://sites.psu.edu/siowfa15/2015/10/20/8-hours-of-sleep-or-7/#:~:text=Several%20sleep%20studies%20have%20been%20finding%20that%20seven,is%20through%207%20hours%20of%20sleep%20each%20night.
https://sites.psu.edu/siowfa15/2015/10/20/8-hours-of-sleep-or-7/
Several sleep studies have been finding that seven hours is the optimal sleep time, not 8. There might be other benefits to sleeping 7 hours of sleep and not sleeping more. Shawn Youngstedt, professor in the College of Nursing and Health Innovation at ASU Phoenix claims the lowest mortality and morbidity is through 7 hours of sleep each night. He also claims that 8 or more hours have even been …
https://yj.tips/brain/getting-enough-sleep-ask-3-questions
2. Sleep and longevity – 7-8 hours. The normal sleep time needed by an average adult is around 7-8 hours. Researchers in the UK and Italy analyzed data from 16 separate studies spanning a period of 25 years, with more than 1.3 million participants and 100,000 deaths. Findings were published in the journal Sleep. Those who had a sleep time lesser than six hours each night had a higher chance of …
https://www.quora.com/Should-I-get-8-hours-of-sleep-or-8-hours-in-bed-7-hours-of-sleep
Answered 3 years ago. People say 8 hours of sleep, but realistically, it can be better to get 7.5 or 9 hours of sleep instead of 8! This is because you wake up better when you are finishing one sleep cycle (lasting roughly 1.5 hrs) and entering a new one. Rather than sleeping 8 hours and waking up in the middle of your cycle (causing you to become groggy), try 7.5 hours or 9 hours and see which way feels best.
https://sleepeducation.org/why-you-only-need-7-hours-sleep/
Having trouble getting that ideal 8 hours of sleep? So is everyone else. But there’s some good news — you may only need 7 hours of it. The American Academy of Sleep Medicine (AASM) and the Sleep Research Society (SRS) have issued a new recommendation, saying seven is the magic sleep number for most healthy adults.
https://www.cdc.gov/sleep/about_sleep/how_much_sleep.html
8–10 hours per 24 hours 2. Adult. 18–60 years. 7 or more hours per night 3. 61–64 years. 7–9 hours 1. 65 years and older. 7–8 hours 1. Although the amount of sleep you get each day is important, other aspects of your sleep also contribute to your health and well-being.
https://www.reddit.com/r/sleep/comments/2g62da/7_hours_vs_8_hours_of_sleep/
i agree that 7 hours feels a lot better in the morning than 8. however, i tend to pay more attention to how many full sleep cycles i get in... if i set my alarm for 7 1/2 hours, that's 5 full sleep cycles; if i set it for 9, that's 6 (assuming a full sleep cycle is 90 minutes). i think the reason you feel tired in the morning after 8 hours of sleep is because you're interrupting a sleep cycle. it's difficult to set alarms/go to bed based …
https://welldoing.org/article/why-you-dont-really-need-8-hours-sleep-night
The overwhelming majority say that people have an average of 7–8 hours’ sleep per night. By looking at some of the national and international surveys, we can get a clear picture of what is a standard or an average amount of sleep.
https://www.quora.com/We-should-sleep-7-8-hours-a-day-Does-it-mean-only-night-sleep-or-both-afternoon-and-night-sleep
A minimum of 7 or 8 hours of sleep is required in a period of 24 hours. More sleep might be needed if your work is more tiring. A full night sleep is more recommended as you will get more deep sleep as compared to afternoon nap. Nobody sleeps as soon as they close eyes. Do they ? That is the reason why it is recommended to get to bed an hour before of your sleep.
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