What are the recommended sleeping periods for different age groups?
102836
7-8 hours for adults. 9-10 for kids. infants - as much as they want :)
18283
i'm 17 and homeschooled, somy usual bedtime is around 12-2, depending on what I have todo the next day.
918779
I get about 6 hours on an average night.  I am a light sleeper and I tend to wake up and not be able to fall asleep again.  At my best I get 8-9.  I am a young adult.
1112984
According to studies, minimum rest/sleep time must at least be 10 hours a day... If you don't, it might impair your judging abilities and affect harshly on your work... Also you are easily irritated if you lack sleep... 10 hours a day man... prioritize your own health rather than your job...\n\nHope this will help you...
367091
Most of the people keep thinking that human being needs eight hours per day of sleep time. New researches have found that the perfect time to get really full filled is 7 hours. (Tibetans monks sleep just 4). So, let's say you want to wake up at 6 a.m. to get jogging and hour back home take a shower and get ready for being at the office at 9 a.m. The best time you can go to bed is 11 p.m.
18262
For healthy adults, 5-7 hours of sleep per day is what is required.\n\nIf however, you are not a healthy adult, and you sleep for less than 4 hours per day, then your chances for medical problems dramatically increases.
1004319
Depends on your age! The average is about eight hours for anyone under the age of 18. Above that is 6-7 hours. But if you feel like you need to sleep longer or shorter lengths, it's all up to you! Some days I sleep for five hours, others almost ten to twelve!
367620
The mind requires time to refresh.  Nine hours for a school aged child gives the body and the mind enough time to relax.  I think that everyone should get at least that much rest.  Try it for a week yourself, you'll be amazed at how much better you feel during the day!
973807
Although it’s a common belief that 8 hours of sleep is required for optimal health, a six-year study of more than one million adults ages 30 to 102 has shown that people who get only 6 to 7 hours a night have a lower death rate. Individuals who sleep 8 hours or more, or less than 4 hours a night, were shown to have a significantly increased death rate compared to those who averaged 6 to 7 hours.\n\nResearchers from the University of California, San Diego (UCSD) School of Medicine and the American Cancer Society collaborated on the study, which appeared in the February 15, 2002 issue of the Archives of General Psychiatry, a journal of the American Medical Association.\n\nAlthough the data indicated the highest mortality rates with long-duration sleep, the study could not explain the causes or reasons for this association.\n \nDaniel F. Kripke, M.D., in his sleep lab at UCSD.\n \nFirst author Daniel F. Kripke, M.D., a UCSD professor of psychiatry who specializes in sleep research, said “we don’t know if long sleep periods lead to death. Additional studies are needed to determine if setting your alarm clock earlier will actually improve your health.”\n\nBut, he added “individuals who now average 6.5 hours of sleep a night, can be reassured that this is a safe amount of sleep. From a health standpoint, there is no reason to sleep longer.”\n\nKripke is also a member of UCSD's Sam and Rose Stein Institute for Research on Aging.\n\nThe study, which addressed sleep issues as part of the Cancer Prevention Study II (CPSII) of the American Cancer Society, also indicated that participants who reported occasional bouts of insomnia did not have an increased mortality rate, but those individuals who took sleeping pills were more likely to die sooner.\n\n“Insomnia is not synonymous with short sleep,” the authors said in the article. “Patients commonly complain of insomnia when their sleep durations are well within the range of people without sleep symptoms.”\n\nThey added that physicians believe most patient complaints about “insomnia” are actually related to depression, rather than a diagnosis of insomnia.\n\nWith 1.1 million participants, this was the first large-scale population study of sleep to also take into consideration variables such as age, diet, exercise, previous health problems, and risk factors such as smoking, in comparing longevity among the participants. In other words, individuals with specific characteristics were compared with individuals of a similar age, health background, etc.\n\nAlthough the study was conducted from 1982-88, the sleep results have not been available until recently due to the length of time required to input and analyze the vast amount and variety of data from the 1.1 million participants.\n\n“Previous sleep studies have indicated that both short- and long-duration sleep had higher mortality rates,” Kripke said. “However, none of those studies were large enough to distinguish the difference between 7 and 8 hours a night, until now.”\n  \nThe figures above indicate hours of sleep for men (left) and women (right). The hazard ratio, the top bar graph, indicates the mortality risk while the bottom graph shows the percentage of subjects associated with the reported number of hours sleep.\n \n The best survival rates were found among those who slept 7 hours per night. The study showed that a group sleeping 8 hours were 12 percent more likely to die within the six-year period than those sleeping 7 hours, other factors being equal. Even those with as little as 5 hours sleep lived longer than participants with 8 hours or more per night.\n\nThe mean age for women in the study was 57, while the mean age for men was 58. Within the six year period, 5.1 percent of the women had died and 9.4 percent of the men. The causes of death resembled the distribution for the general population.\n\nAdditional authors of the study were Lawrence Garfinkel, M.A., the American Cancer Society, New
74633
A normal can sleep 6 to 7 hours a day.Also it is good for health.Where as it is not good for health to sleep after having a lunch or dinner.So adults can have sleep upto 7 hours a day and that's the maximum.So If you are aadult follow this guidelines and have better life for tommorow
480230
depends on the age, my 3yr. old gets 10-12 hours every night. I let him wake up on his own, cause i would rather be up for a extra 2 hours, than have a bratty cranky kid for the rest of the day by waking him up early!\n\nnewborns sleep basically 18-20hours a day.
11905
Although it depends to some extent on age, scientists say just about eight hours per night is the minimum to remain healthy and alert. The effects of sleep depravation include short term memory loss and impaired reflexes and motor skills, so heads up for that if you go  on living at five per night. \n\nI'm a college student, so I feel you on that one. :p
92437
It depends on the person.  \n\nJudging my the phrasing of your question- if you are subsisting on just 5 hours I would say it isn't enough.  (not being mean, just honest)\n\nMost adults need 8 hours or so per night.  As we age, we tend to need a little less or at least not be able to sleep that long.  Sleep recharges your mental batteries- I like to think of it as housekeeping for my brain- things always just make more sense when I have had enough. \n\nTo see how much sleep you really need, take a couple of weeks of going to bed early and not using an alarm.  After the 1st few days, see what time you are naturally waking up.  Average it, and that is how much you need. \n\nTake care of yourself!
846690
Usually around 11 or 12 sometimes earlier sometimes older it all depends on the person, I started at 9, but that was a long time ago.
863947
Adult requires a minimum sleep of 6 hours a day, sleeps will seriously effect your health in a very big way, if you do not get enough sleep, your anxienty, stress level will increase with ease, your mind will not think properly and also that your health will deteriorate extremely fast. so please try not to sleep at the minimum of 6 hours, get a healthy 8 to 9 hours. \n\nIn Korea this guy died of being awake for 50 straight hours playing online game. A few cases has happend already. so Take care Cheers
38672
i sleep about 6 hrs at night. if you look into it people who sleep all day dont have much of a life. there wasting there day but about 7-8 hrs a day. scussful people dont sleeep all day their also more healthy than those who do sleep alll day
170509
A typical adult will need an average of 8 hours of sleep to remain healthy. Some may be ok with 6-7 hours, some may need 9-10 hours. Most people will be between 7-9 hours. You should, as a practice of good sleep hygiene, go to bed and wake up at the same time daily. The body's circadian rhythm is naturally set to sleep at night, not only by the effects of sunlight (internal clock in near the optic chiasm an area in which the optic nerves of the eyes cross), but also by the varying core temperature of the body. The core body temp drops during the afternoon, which is why most people get a little tired after lunch and some cultures actually observe naps during that time. Then the core body temp starts plummeting after 7PM and hits the lowest around 3AM which is when you will be the most tired naturally, even if you are a night worker (which is why many shift workers suffer poor sleep). People who "claim" that 4 hours is enough for them are kidding themselves, the body simply can't recoup in that short of time and many people sleeping that little actually have a sleep disorder that keeps them from getting good sleep. Lack of good sleep and sleep deprivation can lead to a host of very bad things health wise up to and including death. Feel free to look over my previous sleep related question for the full dose of sleep disorders, diagnosis, and treatments. \n\nPersonally, I like about 7 1/2 hours of sleep; I go to bed between 9:30 and 11:00 most nights and wake up between 5:30AM and 8AM depending on weekday vs weekend.\n\nSleep tight ;)