See Full Reference advise that healthy adults needThe term information need is often understood as an individual or group's desire to locate and obtain information to satisfy a conscious or unconscious need. Rarely mentioned in general literature about needs, it is a common term in information science.https://en.wikipedia.org › wiki › Information_needs
For those whose sleep was tracked at age 50, people who slept five hours or less a night faced a 30% higher risk that they would develop multiple chronic diseases over time than those who slept at least seven hours a night. At 60, it was a 32% increased risk, and at 70, it was a 40% greater risk.
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.
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.
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. This is because consistent sleep deprivation can cause a myriad of chronic health issues in people over time.
How Much Sleep Is Too Much? Sleep needs can vary from person to person, but in general, experts recommend that healthy adults get an average of 7 to 9 hours per night of shuteye. If you regularly need more than 8 or 9 hours of sleep per night to feel rested, it might be a sign of an underlying problem, Polotsky says.
Sleeping between 90 and 110 minutes gives your body time to complete one full sleep cycle and can minimize grogginess when you wake. But any sleep is better than not at all — even if it's a 20-minute nap.
If your school or work schedule requires you to be up between 5:00 and 7:00 a.m., these are the suggested bedtimes: School-age children should go to bed between 8:00 and 9:00 p.m. Teens should try to go to bed between 9:00 and 10:00 p.m. Adults should try to go to sleep between 10:00 and 11:00 p.m.
Most likely, you're still tired after eight hours of sleep because of these three factors: (1) you don't know your sleep need, (2) you're not taking into account your sleep efficiency, and (3) you carry sleep debt.
How to work out the ideal bedtime. If you need to wake up by 7am then count back 7.5 hours to find that bedtime is around 11.30pm. Make sure you're in bed before then so you're relaxed ready for sleep and allow yourself 15 minutes to drop off. You can use the sleep calculator to find the ideal bedtime for you.
Older adults need about the same amount of sleep as all adults—7 to 9 hours each night. But, older people tend to go to sleep earlier and get up earlier than they did when they were younger.
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.
“There is no such thing as a “fixed or ideal time” to go to bed which will suit all individuals. It is generally advisable to fall asleep between 10 pm to midnight as for most people this is when the circadian rhythm is at a point that favours falling asleep.”
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.
Is 5 hours of sleep enough once a week? No, 5 hours of sleep isn't enough once a week. For optimum energy levels, good health, and maximum performance, you need to meet your individual sleep need each night — which is most likely more than 5 hours.
If you nap in the morning, the sleep consists primarily of light NREM (and possibly REM) sleep. In contrast, napping later in the evening, as your sleep drive increases, will comprise more deep sleep. This, in turn, may disrupt your ability to fall asleep at night. Therefore, napping late in the day is discouraged.
And while the occasional long sleep is generally nothing to worry about, oversleeping several days a week could be a sign that something more serious is going on.
People who sleep less than the recommended 7 to 8 hours per night are more likely to suffer from chronic conditions like cardiovascular disease, obesity, depression, diabetes and even dementia, Fu and other experts say.
Our biology influences what times of the day we are most productive. The overwhelming majority of all people are not built to consistently wake up at 5 AM. Unless you are a Lion, built for waking up early, don't force yourself. You may be able to do it for a short time, but it is not sustainable.
In fact, research from the University of Toronto found people who wake up earlier are generally happier and have a better outlook on life. Now that's some research we can get behind. Still, it's important that your early wake-up time doesn't sacrifice your sleep.
The Best Time to Wake Up Depends on You
They're going to bed at 8 PM to get adequate sleep, or they're running on fewer hours than required. A 4 AM wake-up time will be good for you in the same way that an 8 AM wake-up time is. As long as you get enough restful sleep, you shouldn't worry about the best time to wake up.
“A power nap is a nap that's short — less than 30 minutes long,” says Safia Khan, MD, a specialist in sleep disorders and an assistant professor in the department of family and community medicine and the department of neurology at UT Southwestern Medical Center in Dallas.
What's an all-nighter? An all-nighter is defined as a single night of total sleep deprivation. That is, 0 hours of sleep. It's a fairly common practice for students, particularly in college.