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Doctor insights on: Sleep Cycle Stages Chart

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What are sleep stages?

What are sleep stages?

See below: Characteristics of normal sleep, referred to as sleep arhcitechture, comprises two distinct states : nrem (3 divisions) and rem. Adequate levels of each are needed to maintain alertness, heal the body and assist with memory and learning. Also, many physiologic and neurochemical activities occur during the various stages of sleep. ...Read more

Dr. Randy Sussmane Stubbs
336 Doctors shared insights

Sleep Stages (Definition)

A sleep stage is one of the five stages of sleep, which differ from one another by the brain's activity. Four of the stages are called non-REM sleep, and the other is REM (or Rapid Eye Movement) sleep. REM sleep is when we dream. Non-REM sleep is stages 1 to 4, representing ...Read more


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How to correct the sleep cycle?

How to correct the sleep cycle?

Sleep Hygiene is Key: Retire & rise same time each day. Keep bedroom dark & cool & use only for sex & sleep. Turn off tv. No naps. Exercise regularly but not in late evening. No caffeine for 6 hrs & no alcohol or tobacco w/i 2 hrs of sleep. Keep dinner moderate sized & finish at least 2 to 3 hrs before sleep. Can try warm milk, Chamomile tea or melatonin along w light reading, warm bath or lavender scent. Sometimes med ...Read more

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What are the different sleep stages?

What are the different sleep stages?

Sleep stages: The sleep stages are 1, 2, 3 and rem or more commonly called dream sleep. Sleep becomes deeper as you progress from 1 to 3. You can dream in any stage. As sleep gets deeper arousal from sleeping is more difficult. The distribution of stages changes over ones lifetime. ...Read more

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How do I get my sleep cycle correct?

How do I get my sleep cycle correct?

Use good sleep: Hygiene. Retire & rise same time each day. Keep bedroom dark & cool & use only for sex & sleep. Turn off tv. No naps. Exercise regularly but not in late evening. No caffeine for 6 hrs & no alcohol or tobacco w/i 2 hrs of sleep. Keep dinner moderate sized & finish at least 2 to 3 hrs before sleep. Can try warm milk, chamomile tea or melatonin along w light reading, warm bath or lavender scent. ...Read more

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Why is light so important for our sleep cycle?

Why is light so important for our sleep cycle?

Circadian rhythm: Our circadian rhythm works on Light and darkness, as well as, all hormones in our body also release on light and dark cycles, so our body can function better. ...Read more

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Fixing sleep cycle in 2-3 days, is this possible?

Sleep Cycle: Sleep cycle is determined by your circadian rhythm and homoestatic drive and genetic factors, unless its stress related and you need some as needed meds this can help you sleep faster. ...Read more

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Can you please explain how I can control my sleep cycle?

Sleep: Sleep is driven by circadian and homeostatic drives. Identify your daily pattern by maintaining a sleep diary for 2 weeks or so, read about sleep hygiene, you can google sleep diary and sleep hygiene etc
sometimes melatonin and light therapy are used if you have delayed sleep phase or advanced sleep phase syndrome. ...Read more

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Does the sleep cycle iphone app (or anything similar) work well?

Does the sleep cycle iphone app (or anything similar) work well?

Sleep cycle App: My experience and the review ratings given by numerous users on iphone app of sleep cycle alarm clock have been excellent. It is very inexpensive. Try it yourself. ...Read more

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How often does someone wake up in a normal sleep cycle? Even if they are not fully aware at the time?

How often does someone wake up in a normal sleep cycle? Even if they are not fully aware at the time?

Sleep cycle duration: We oscillate in cycles throughout the night between a light sleep and very deep sleep and through the dream states referred to as REM sleep about once every 90 minutes on the first time through and about 2 hrs. Thereafter for another 2-4 cycles until we awaken again in the morning to the next day. ...Read more

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I was wondering what would the sleep cycle be of a person that went to sleep at 1 am and woke up at 9 am?

I was wondering what would the sleep cycle be of a person that went to sleep at 1 am and woke up at 9 am?

Sleep cycle: If it's consistently these times then the cycle will be essentially normal with small variations., ie similar to someone who sleeps from 9pm to 5am. You will still get 4-5 rem periods. ...Read more

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Can eegs show the different sleep stages?

Can eegs show the different sleep stages?

Yes.: Yes, the stages of sleep are identified through eeg. Stages w (wakefulness), n1, n2, n3, and r (rem). You sleep study will be able to measure the time and % you spend in each of these states. Sleep patterns and architecture change for individuals throughout life. They are dynamic and distinct. ...Read more

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What is the best way to change an infant's sleep cycle?

What is the best way to change an infant's sleep cycle?

With a tired changer: Most infants sleep, eat, poop and pee because of their very basic needs and underdeveloped nervous system. They have to learn everything. They develope patterns just like adults. To change a pattern you have to do the same thing over and over for 21 days. When you want the baby to sleep don't respond to their requests so quickly let them lay. Wake them up at the time you want them up.. ...More. ...Read more

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I've an irregular sleep cycle due to my night shift work. How can I take care of my health?

I've an irregular sleep cycle due to my night shift work. How can I take care of my health?

If you can't: Change your irregular work schedule, make sure you exercise, avoid stimulants about 6 hours prior to sleep time and consider taking some sustained release melatonin 1 hour prior to sleep time. A massage now and then would be a relaxing treat if you can manage that also. Peace and good health. ...Read more

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When is a good time in the day and for how long should I nap to not disturb my normal sleep cycle?

When is a good time in the day and for how long should I nap to not disturb my normal sleep cycle?

Try a power nap: There is some evidance that naps of 45 min to an hour will not mess with your regular sleep cycle. Set the alarm yourself and get up, even if you are still sleepy. Regardless, try to keep your biorhythm clock consistant by arising at the same time every day, even weekends. If tired you can go back down after 5-10 minutes, otherwise you may have difficulty getting back on schedule. ...Read more

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For the past few months,  i'm constantly waking up during an 8hr sleep cycle to turn or adjust. Why?

For the past few months,  i'm constantly waking up during an 8hr sleep cycle to turn or adjust. Why?

Depends: Can be many causes. The first, least expensive and safest thing is to get a get 15 min aerobic exercise of some type, every day for 2 weeks, see if improves. It is often nervous energy or mild muscle cramp. If it doesn't improve may want to get checked out. ...Read more

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How does melatonin regulate sleep cycle? Not for me! I've taken it nightly for months and now it dosent work when used alone.

Tolerance: No sleeping medication is designed to be used daily. You have developed tolerance to this product. It may be time to learn how to sleep naturally again. Your brain can learn how to sleep again. ...Read more

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How long does it take to reset your sleep clock and cycle? I've had bad sleep for 2 years now and my sleep cycle has been off everyday.

How long does it take to reset your sleep clock and cycle? I've had bad sleep for 2 years now and my sleep cycle has been off everyday.

Varies: Resetting a sleep cycle is difficult. I would recommend seeing a sleep specialist first to determine the your sleep problems are not health related- sleep apnea, stress, etc. ...Read more

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Gluc levels consistently rise from mid 80/low 90s at bed time & while checking in middle of sleep cycle, to 100-110 when I wake up. Health risk?

Gluc levels consistently rise from mid 80/low 90s at bed time & while checking in middle of sleep cycle, to 100-110 when I wake up. Health risk?

Fasting glucose 110: Fasting glucose at 110 indicates an evolving glucose metabolic problem. This value itself is not a health risk but it may herald a more overt glucose metabolic problem that will evolve; you can thwart this with diet change, more exercise, achieving ideal weight; become aware of glycemic index of foods, eat low glycemic index foods; avoid saturated fats; it is good to be concerned. ...Read more

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I work from 12 pm - 6 am what hours should I be sleeping in order to have a healthy sleep cycle? (please only post answers that are on topic) thanks

I work from 12 pm - 6 am what hours should I be sleeping in order to have a healthy sleep cycle? (please only post answers that are on topic) thanks

Sleep cycle: If you sleep the same hours daily then the sleep cycle will be normal. If you do shift work there may be some disruptions to the cycle but this is temporary. Get 7-8 hours per night and you'll be fine. ...Read more

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Is "dawn phenomenon" (slightly higher gluc levels upon waking up) specific to the literal morning, or to one's sleep cycle? I work nights/sleep days.

Is "dawn phenomenon" (slightly higher gluc levels upon waking up) specific to the literal morning, or to one's sleep cycle? I work nights/sleep days.

Dawn phenomenon: It is more specific for the sleep cycle and can represent hypoglycemic episode during sleep. If it continues, a bedtime snack or adjustment of your mess may be necessary ...Read more

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When in sleep cycle does bone lenghtening occur?

When in sleep cycle does bone lenghtening occur?

Delta phase: Delta phase of the sleep cycle is the deepest level of sleep in which hgh is released. So in a growing individual, this release of growth hormone would be at play in bone growth. ...Read more

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How can you tell if you've past stage one of the sleep cycle? Do you not feel well rested in the morning if you didn't?

Sleep Staging: Is done through recordings in a sleep lab by using measurements of the electrical activity in your brain/muscles while you sleep. You will always go through stage 1-2 which are light sleep, rem which is dream sleep, and at your age also stage 3 which is deep sleep. If you don't feel rested despite sleeping 8 hours you should speak to your doctor, who will ask evaluate you for a disorder. ...Read more

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My sleep quality (measured using the iphone app sleep cycle) averages to 64%. Is this normal, or have I not been sleeping properly?

My sleep quality (measured using the iphone app sleep cycle) averages to 64%. Is this normal, or have I not been sleeping properly?

Consider The Source: With quality sleep one awakens rested and refreshed. This is a subjective measurement. To objectively measure sleep, a polysomnogram is required. This can only be performed in a sleep lab or clinic. While an iphone app may claim to measure sleep quality, the likelihood that it reflects a true measurement of sleep quality is highly questionable. If you feel rested your sleep is likely ok. ...Read more

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I have had increasingly worse insomnia problems for the past 9 months. I am averaging a sleep cycle (4-8 hours) every 48-72 hours. Suggestions?

I have had increasingly worse insomnia problems for the past 9 months. I am averaging a sleep cycle (4-8 hours) every 48-72 hours. Suggestions?

Assessment: This is unlikely to be primary insomnia (insomnia that is not caused by another condition). A sudden change in sleep is also not usually the pattern for two other common sleep disorders (obstructive sleep apnea and restless legs syndrome) so the most likely explanation is either a mood or anxiety disorder. Contact your doctor. You can get help but first you need a thorough assessment. ...Read more

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Can sleep stages be detected by wrist actigraphy?

Suggested only....: Actigraphy involves recording movements, large and small, of the limb on which the monitor is worn. Since rem sleep is usually devoid of or contains very little movement, one can infer the presence of rem cycles by the decrease in small movements that are a normal part of non-rem sleep as well as normal drowsiness and wakefulness. ...Read more

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In my 7-8 hours sleep I wake 3-4 times to go to the bathroom, it takes 5-10 minutes to go back to sleep, does that interrupt my sleep cycle?

In my 7-8 hours sleep I wake 3-4 times to go to the bathroom, it takes 5-10 minutes to go back to sleep, does that interrupt my sleep cycle?

Potentially: The more fragmented your sleep is, the more likely it is that it can affect how you feel during the day. That being said, it is still normal to wake up at least 4-6 times during the night between sleep. If you are noticing daytime symptoms you may want to consider seeing a sleep specialist. ...Read more

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I take 50mg of seroquel (quetiapine) every other night. How long after I'm off of it will my sleep cycle adjust? Because now I only sleep when I take it.

I take 50mg of seroquel (quetiapine) every other night. How long after I'm off of it will my sleep cycle adjust? Because now I only sleep when I take it.

Don't know: Your question may sound simple, but it is not. Normal sleep will return when you have seen to proper nutrition, rest, exercise, and sleep hygiene. In addition, your body must relearn to function without the medication. As a rule, this does not take long if the other criteria are met. ...Read more

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Can you enter sleep at REM and skip over the previous sleep stages?

Can you enter sleep at REM and skip over the previous sleep stages?

No: Rem sleep, also called dream sleep, follows the other stages of sleep, and comprises about 20-25% of the total sleep time. In normal sleep we cycle through non-rem and rem stages four to six times per sleep period, and they occur at about 90 minute intervals. ...Read more

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Will be on oxygen while sleeping affect my progression through sleep stages?

Will be on oxygen while sleeping affect my progression through sleep stages?

Likely improve: If you are on oxygen at night for something like sleep apnea, then likely you will get better sleep quality (and progress through deeper stages of sleep) with treatment. ...Read more

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Can taking 10, 000 iu of vit D3 for a few months reset my sleep-cycle if I have delayed sleep phase syndrome?

Can taking 10, 000 iu of vit D3 for a few months reset my sleep-cycle if I have delayed sleep phase syndrome?

Probably not: There is no evidence to support vitamin d to shift sleep phase. Bright light at the right time can do it and high doses of melatonin timed right can do it, but easiest is to stay awake throughout the night and next day (around 36 hours or so), then go to sleep at the desired time and you should be on that cycle. ...Read more

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Just got a new job and I am going to bed at 1 am now and waking up at 9 am, unfortunately! Is that a healthy enough sleep cycle?

Just got a new job and I am going to bed at 1 am now and waking up at 9 am, unfortunately! Is that a healthy enough sleep cycle?

Best sleep -10PM-2AM: Literature suggests best restorative sleep occurs between hours of 10PM and 2AM; specifically regarding replacement of leukocytes - white blood cells. Try to protect this sleep interval as much as possible.
Avoid working an irregular shift schedule if at all possible. This represents the worst disruption of your natural sleep cycle. ...Read more

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What neurological condition would cause a person to revert to child-like state and reverse sleep cycle? Almost certain it is dementia

What neurological condition would cause a person to revert to child-like state and reverse sleep cycle? Almost certain it is dementia

More information: You're correct, people with dementia may appear to be childlike and have changes in their sleep cycle. The only way to be sure is through medical and neuropsychological evaluation. Proper diagnosis is important. If it is dementia, there may be medications and other recommendations that can help address sleep and behavior changes. ...Read more

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Can a person have lucid dreams or any dreams if he does not reach the full sleep cycle, I only reach level 2 and not rem?

Yes: Even though we consider rem the stage where we dream, we actually do dream in the non-rem stages but not nearly as much. Also, if they occur you may not remember those dreams so the only way to know for sure is by a sleep study. ...Read more

Dr. Heidi Fowler
5,051 Doctors shared insights

Sleep (Definition)

Sleep is a topic that involves concepts such as how long it takes to fall asleep, how many times one wakes up at night, how many hours one sleeps at night, sleep stages, ...Read more