Young adults can get 7 to 9 hours of sleep as recommended by the National Sleep Foundation — with 6 hours being appropriate. Less than 6 hours is not recommended.
Sleep requirements stabilize in early adult life, around the age of 20. Individuals vary in their sleep needs but most adults require between 7 and 9 hours a night to feel properly refreshed and function at their best the next day. Many try to get away with less sleep.
uptodate.com . Despite these trends, the research mostly agrees that six hours of sleep is not enough for most adults. Experts recommend that most adults need at least seven hours of sleep every night.
For adults, getting less than seven hours of sleep a night on a regular basis has been linked with poor health, including weight gain, having a body mass index of 30 or higher, diabetes, high blood pressure, heart disease, stroke, and depression.
But five hours of sleep out of a 24-hour day isn't enough, especially in the long term. According to a 2018 study of more than 10,000 people, the body's ability to function declines if sleep isn't in the seven- to eight-hour range.
Is 3 hours enough? This will depend largely on how your body responds to resting this way. Some people are able to function on only 3 hours very well and actually perform better after sleeping in bursts. Though many experts do still recommend a minimum of 6 hours a night, with 8 being preferable.
The bare minimum of sleep needed to live, not just thrive, is 4 hours per 24-hour period. Seven to 9 hours of sleep are needed for health, renewal, learning, and memory.
We do not recommend sleeping for only one hour at night. Some research suggests that lost sleep can take years off your life and that you may not be able to catch up on the lost hours of rest.
People with short sleep syndrome can sleep four-six hours a night and still function flawlessly.
Elon Musk says he is "fairly nocturnal" and only sleeps about six hours a day. The world's richest man made the comments during an August 5 episode of The Full Send podcast. He said he usually goes to sleep at about 3 a.m. and wakes up after about six hours at 9 a.m. or 9:30 a.m.
What is short sleeper syndrome? Short sleeper syndrome (SSS) is a sleep condition characterized by sleeping for fewer than six hours each night. Most adults need seven or more hours of sleep each night to feel rested in the morning. Those with SSS, however, can function normally throughout the day despite less sleep.
You may be able to do it for a few days, but eventually, the lack of rest will catch up with you. Keep reading to find out why it isn't possible to feel rested after getting only 4 hours of sleep per night over a long period.
This is because our brain is constantly forming new connections while we are awake. The longer we are awake, the more active our minds become. Scientists believe that this is partly why sleep deprivation has been shown to reduce symptoms of depression. However, there are negative outcomes of this, too.
Some people might scoff when others say they only need four to six hours of sleep each night, but for a percentage of the population, that's the truth, says Dr. Allison Brager, Ph. D, performance engineer for Momentous. Generally, high achievers tend to sleep less, Brager tells CNET.
10 HOURS OF SLEEP AND ONE-SECOND NAPS
It's common knowledge that sleep is good for your brain – and Einstein took this advice more seriously than most. He reportedly slept for at least 10 hours per day – nearly one and a half times as much as the average American today (6.8 hours).
With various board meetings and no shortage of pressure, rest can be hard to find. CEOs like Mark Zuckerberg and Elon Musk get under six hours of sleep each night.
Nikola Tesla Nikola Tesla never slept for more than 2 hours a day. Much like Da Vinci, Tesla followed the Uberman Sleep Cycle, and claimed to have never slept more than 2 hours a day. He once reportedly worked for 84 hours straight in a lab without any rest.
Using whole exome genome sequencing, the researchers searched for gene mutations that only the naturally short sleepers had. They found a rare mutation in the ADRB1 gene that was being passed through the family. Family members who inherited one copy of this mutant gene had a shortened sleep cycle.
Not surprisingly, test subjects who slept the recommended eight hours a night had the highest performance ratings. Those who slept six hours a night did fine until nearing the end of the study, around day 10, and those functioning on just four hours of sleep were noticeably worse each day.
How much sleep do athletes need? Pro athletes typically need more than most—it's recommended that they get 8-10 hours every night. But for the average adult, aim for seven to nine hours of sleep a night to avoid the effects of chronic sleep deprivation.
Sleep requirements seem to follow a typical curve in the general population, with most people needing between seven and eight hours nightly. Only about 5 percent of the population can get by just fine on six hours of sleep, notes Fu.
But a small percentage of adults are short sleepers. They regularly feel alert and refreshed after sleeping less than 6 hours. Short sleepers function normally during the day despite their short sleep duration. If you're a short sleeper, this shortened sleep duration occurs naturally.