Is sleep 4h in the afternoon and 5h at night equal sleep for 9h at night?
491905
Dividing your sleep is okay.  It used to be common practice.\n\nTry timing your sleep to sleep cycles.  It is best to wake up during REM sleep which occurs at approximately 90 minute intervals (90mins, 3hrs, 4 and 1/2hrs, 6hrs, etc.).  If you wake during REM you will feel more aware and ready to go.  If you awake during deep sleep (non-REM), then you will feel groggy and less rested.  \n\nSleeping mid-day (12ish to 3ish) was common practice before the industrial revolution.  With the industrial revolution people had to start punching in and working through the hottest hours of day.  Before that people would rest/nap during those mid-day hours (those are the origins of the siesta).\n\nIf you can manage 6hrs at night and 3hrs during the day, you ought to be in good shape.  If you can't do six at night, I would recommend 4&1/2 at night and 3 during the day.  \n\nNine hours is actually too much sleep.  Studies have shown that people who sleep over 8 hours a day don't live as long as people who sleep less than 8 hours.\n\nGood luck establishing a routine that works for you!
858453
u should go to sleep earlier because its very unhealtly to go to sleep that late every night\n\ni got to sleep 9:30 wake up at 7:00  so i get a good 10 hrs of sleep
423371
2 in the morning\n2 in the afternoon\n2 in the evening and two at night
1120759
5pm there but 4pm in england
843049
Ilike to go up to bedroom about 10.30 read or watch a bit of television for about an hour just me in silence as I have to have some me chill time first then sleep. In the morning I wake at 7.30 but get up at 8 o'clock. It is important to relax body before you go to sleep to get a good nights one and also to wake up gently so you are getting ready for the day.\nI have to have 8 to 9 hours every night.
248017
The only reason you are using the arcaic am and pm system is because the english language doesn´t have a single word for day and night. For the rest of us there are 24 hours to the (day + night) so it´s 00:00 which is the first minute of the first hour in the (day + night) after while 23:59 is the last minute of the (day + night) before.
732970
It partly depends on what time you go to sleep. If you are already getting 8 hours of sleep a night then by all means wake up earlier and get some exercise. You will find after a short time you will have more energy thoughout the day and will probably be less tired at the end of your work day. Newer more comprehensive studies have shown that you shouldn't really get more than 7 1/2 hours of sleep anyways. 8 hours of sleep is excessive and can actually shorten your life. If you're only sleeping 6 to 7 hours a night then definately don't skip sleep to exercise you'll wear yourself out and possibly injur yourself after a while.
568549
Neither.  Midnight and noon do not belong to am or pm.  That's why they have special names.  People can argue all they want but midnight and noon are special cases.
256479
it not a matter of whether itz weekday or weekend rather summer n skol seaonz... anyhow on weekends i sleep til 9-11:30 in summer i sleep til 1 but datz juz cuz i sleep at 7 in da mornin w/ my cuziz... lol... so fun.... sigh.\npeace out:)
444346
Sleep when you're tired, but the most crucial sleeping hours are considered to be 2-6am (you should sleep more than 4 hours though, at least 6 at a MINIMUM).  Happy sleeping.
959166
No, whether you oversleep or undersleep, it doesn't change the next days sleep. You should get different amounts of sleep at different stages in your life but as a rule of thumb, get your 6-8 hours....whether or not you over/underslept the night prior.
867842
from 8 in the morning till 4 in the afternoon
521415
Shifting the time within the day should have no effect.  You could probably start taking them in the afternoon with no effect and then could transition to nighttime within a few days after that.
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 ;)
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.
528999
Five keys to optimal sleep\n\n# Rise and shine. Spending a few minutes in the early morning sun helps your biological clock align itself with the cycles of nature. Bright morning light stimulates the release of serotonin, the hormone of wakefulness, and helps the brain reduce levels of melatonin, the sleep hormone.\n\n# Have your evening meal early. Finish your evening meal by 6 or 6:30 p.m. so your body's digestive processes can be at rest when you go to bed. If you need to change your meal times earlier in the day to do this, then work backward accordingly.\n\n# Go to bed at 10 p.m. Your body was designed to sync with the cycles of nature -- including daylight and darkness -- with the optimal time for sleep falling between 10 p.m. and 6 a.m. If you're in the habit of staying up much later than 10 p.m., begin getting up progressively earlier by a few minutes each morning, over several days. This will make it easier to go to bed earlier in the evening until you reach your target.\n\n# Reduce stimulants. If you find it difficult to get to sleep around 10 p.m., try cutting stimulants out of your diet -- particularly caffeine products like coffee, chocolate and black tea -- even in the morning. These take a long time to be eliminated from your body, and their effects can linger into the evening.\n\n# Quiet your mind. If your body is tired but your mind is active, try meditation or prayer. But don't make it hard work; use a simple and gentle form, such as repetition of a thought or phrase, or just focus on following your breath in and out. Relaxation music is another excellent way to soothe an anxious or active mind.
966286
What is the right amount of sleep?? but most importantly, what are the right hours to sleep?? If you sleep 8 hrs per day but you go to bed at 1 am do not expect that it is the same as iif you had gone for sleep, say at 11 pm . There is evidence that there is an optimum 8 hrs of rest and that is between 10pm and 6 am the next day, since it is during those hrs that our body takes inventory of what is missing and goes about replenishing it. Meaning if you are out and about during those hrs, not only you are not replenishing but you are 'spending' also additional energy/ body resources at a time when your body is not really prepared to do so. Do not expect such advice to be widely disseminated in our electricity frenzied societies, however if you ask any honest phsyician, they will tell you so.\n\nI have been trying lately (the last 2 months or so) to at least prepare for bedtime at 10 pm, and be under the covers by 11pm the latest, during working days. I still feel drained at times, but I also began to feel a little better during other moments. (It also shows a little in my face too)\n\nAnother possibility of your being worn out, is that there may be some health condition that has not fully manifested. A first and easy step would be just some standard blood tests which are failry inexpensive, that will give you some indication of that, (if any exist)\nA third possibility is that we are all under some intense stress ( I hear more and more people complaining of feeling drained) which is putting us down