why 8 hours of sleep?

why 8 hours of sleep?
A review of 15 studies found that people who don't get enough sleep are at far greater risk of heart disease or stroke than those who sleep 7–8 hours per night ( 15 ). Sleeping less than 7–8 hours per night is linked to an increased risk of heart disease and stroke.
Full answer in: www.healthline.com
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Does everyone really need 8 hours of sleep?
But the ideal sleep duration has long been thought to be universal. “There are many people who think everyone needs eight to eight and a half hours of sleep per night and there will be health consequences if they don't get it,” says Ptacek. “But that's as crazy as saying everybody has to be 5 ft. 10 in. Aug 6, 2020
Full answer in: time.com
Does it matter what time you sleep if you get 8 hours?
Myth: It Doesn't Matter When You Sleep As Long As You Sleep Enough Hours. Studies have demonstrated that the timing of sleep matters, and it's best to sleep as much as possible during hours of darkness. Sleeping at night helps align the body's circadian rhythm, or internal clock, with its environment. Nov 4, 2020
Full answer in: www.sleepfoundation.org
What causes oversleeping?
The most common causes of excessive sleepiness are sleep deprivation and disorders like sleep apnea and insomnia. Depression and other psychiatric problems, certain medications, and medical conditions affecting the brain and body can cause daytime drowsiness as well. Jul 31, 2020
Full answer in: www.sleepfoundation.org
More questions like: What causes oversleeping?
Why do you need 8 10 hours of sleep?
Both the National Sleep Foundation and the American Academy of Sleep Medicine agree that teens need between 8 and 10 hours of sleep per night. Getting this recommended amount of sleep can help teens maintain their physical health, emotional well-being, and school performance. Aug 5, 2020
Full answer in: www.sleepfoundation.org