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Polyphasic sleep: woman sleeping

We think of sleep as a way to rest our mind and body after the day of hard work. While the majority of us prefer sleeping only once per 24 hours (during the night) there are people who are trying different sleeping techniques to be more productive and focus on daily tasks easier. 

A few of those techniques are polyphasic and diphasic sleep. However, while many researchers argue whether or not it’s better than the traditional sleeping method, the main questions still remain: 

Is polyphasic sleep healthy? 

Is polyphasic sleep safe? 

What’s the polyphasic sleep schedule? 

To make all the aspects clear, in this article I will introduce you to the polyphasic sleep, whether or not it’s safe based on biological factors, and how it can influence your health.

Patricia Celan

MD, Psychiatry Resident

What should be done every day to ensure good sleeping patterns?

Sleep hygiene is key to optimize your sleep. That means going to bed at the same time and waking up at the same time every day. Wide variations in sleep hours can throw off your circadian rhythms and cause sleep disturbance when you do manage to go to bed. Part of sleep hygiene means making it easy to fall asleep too! Avoid caffeine after 5, exercise daily but at least a couple hours before bedtime, and turn screens off (cellphones, tablets, laptops, etc.) an hour before bed. Wind down gently, with calming activities such as meditation, listening to soothing music, or taking a warm bath.

What is Polyphasic Sleep? 

Polyphasic sleep refers to sleeping multiple times during the day - more than two. It’s different from both monophasic and diphasic sleepers who tend to sleep either one or two times during a period of 24 hours. 

Polyphasic sleep is also often called segmented or divided sleep (biphasic sleep is also called this way) and could mean interrupted sleep when you experience one or more periods of wakefulness during your sleep. 

The term polyphasic might not be familiar to everyone, however, you definitely know what nap is. So, you can imagine taking multiple naps during the day, which is one of the polyphasic sleep methods. 

Polyphasic sleep: woman sleeping during the day

The term “polyphasic sleep” was used in the early 20th century for the first time by the psychologist J. S. Szymanski[1]. While some of you are willing to try a polyphasic sleep schedule, you should know that it’s widely associated with circadian rhythm disorder which causes insomnia, excessive daytime sleepiness, and other sleep-related issues. 

Monophasic vs. Polyphasic Sleep Schedule

Monophasic sleep is “normal” sleep if I could say so. It’s sleeping one time per day, only during the night, which is something that the majority of us are used to. However, even though it’s something that we’re used to, it wasn’t always this way. 

As far as it’s known, a monophasic sleep schedule is widely related to the industrial revolution and the electricity. Some studies revealed that our ancestors slept only 3-5 hours per session, then used to wake up, perform some light activities and get back to sleep for the next 3-5 hours. 

While such a polyphasic sleep method doesn’t seem logical at first, it’s actually pretty simple to understand. Before the electricity, our ancestors strongly depended on the natural light. So, when the darkness lasted about 12 hours, it was quite difficult to sleep without interruption. 

That’s why they split those 12 hours in half or even more segments and woke up every few hours to have a break and then got back to sleep again. Quite simple, right? 

Now minority of us choose biphasic or polyphasic sleeping due to our lifestyle. Since we’re always in a rush, there’s no way we could find time for multiple naps during the day. Of course, it might work for freelancers and those who have a flexible work schedule. 

Polyphasic sleep: couple sleeping

Thus, you should understand the difference between the monophasic and polyphasic sleep, however, the main questions still remain: is polyphasic sleep healthy? Is polyphasic sleep safe? That’s what I’m about to discuss in the further section. 

Polyphasic Sleep and Health 

To understand whether or not the polyphasic sleep is good for you, we should take a look into your sleep rhythm and discuss the production melatonin. Both of these aspects are widely related to your sleep schedule.

24-hour sleep-wake rhythm makes sure that we’re awake and focused during the day, and sleepy during the night. Melatonin - the sleep hormone, plays a major function here. When the evening comes and it gets dark, the production of melatonin increases and makes us sleepy. On the contrary, in the morning, with the first sun rays, the melatonin production decreases and we wake up. We should be ready to begin our day at 9 a.m. 

As you can see, the melatonin and the sleep-wake cycle[2] are widely related, however, it’s important to understand that each of our sleep drives is different, and while some of us can sleep 10-12 hours without interruptions, others cannot stay asleep for 5-6 hours. 

Polyphasic sleep: melatonin production

Polyphasic sleep is often associated with circadian rhythm disorders such as insomnia, excessive daytime sleepiness, and other related problems. That’s because people who cannot sleep or stay asleep, usually experience disruptions in their sleeping cycles. 

What is more, when you take naps during the day, it can be difficult to fall asleep at night, consequently, it can also disrupt your sleeping cycle and cause insomnia. 

On the other hand, Dr. Claudio Stampi, a person who dedicated his whole life to understand ultradian rhythms and the art of napping, showed that polyphasic sleep can have a positive impact on your health, including:

  • Better performance
  • More focused and alert

The studies were primarily performed to find a way to minimize sleep deprivation. If you have no problems experiencing a quality nighttime sleep, then Stampi doesn’t recommend polyphasic sleeping. 

Polyphasic sleep: woman sleeping

On the other hand, Stampi himself is a biphasic sleeper and claims that he is never tired. However, it’s obvious that biphasic sleep is different from polyphasic sleeping, it’s way more common and less extreme. 

All things considered, we’re all different and while some of you might find polyphasic sleep beneficial, others could go only a few days sleeping like this. I guess you can never know until you try, however, I wouldn’t recommend doing this, especially if you do not experience difficulty to fall asleep. 

Polyphasic Sleep Schedule

There are certain things to understand about the polyphasic sleeping schedule. Even though I would never recommend it, you should understand that it’s not about sleeping whenever you want. In order for this to work as intended, you should keep a strict sleeping regime.

Let me introduce you to the best-known combinations of polyphasic sleep patterns

  • Everyman - sleeping about 3 hours during the night and take three naps that last about 20 minutes during the day. 
  • Uberman - sleep only 3 hours per day, take six naps that each last 30 minutes. 
  • Dymaxion - sleep only 2 hours per day by taking a 30-minute nap every six hours. 

As you can see, polyphasic sleepers usually stick to the strict sleeping schedule, however, sleeping 3 hours per day is not always the right choice. At least that wouldn’t be enough for me. 

People Who Practiced Polyphasic Sleep

For your interest, let’s take a look at the sleeping schedules of well-known people

Polyphasic sleep: woman sleeping

If you were doing your research on polyphasic sleep, ou may have come across the fact that Leonardo da Vinci practiced this method. While many argue believing that it’s only an urban myth due to the lack of credible sources, others actually believe that it’s true. 

Leonardo da Vinci practiced what looks most similar to the Uberman sleep pattern - he took a 20-minute nap every four hours. What is more, he was so focused on the work that he used to forget to drink and eat. No wonder this method worked for da Vinci. 

Napoleon - military commander is also one of the legends who used to practice polyphasic sleep. However, not by choice. As far as it’s known, even though such records are easy to falsify throughout history, Napoleon was suffering from insomnia due to the great stress. Consequently, he took frequent daily naps to get more energy and always be prepared. 

Winston Churchill’s sleeping habits are also quite interesting. He used to stay up late every night and always wake up at 8 a.m. to go through his regular morning routine - reading papers, dictating letters, and so on. After that, during the tea time, he used to take a 1-2 hour nap and then work until 3 a.m. If counting the total sleep time, he averagely slept 5-6 hours per day. As you probably understand, Winston Churchill was a classical biphasic sleeper. 

Therefore, as you can see, even well-known people were polyphasic sleepers, however, what’s important to understand is that not all of them did this by choice - as I already said, polyphasic sleep is widely connected to sleeping disorders. 

Tips for Better Sleep 

Before trying such sleeping techniques as polyphasic sleep, you should try way simpler and safe methods to improve the quality of your sleep. Here are the tips that work for the majority of people. 

Polyphasic sleep: woman sleeping

  • Turn off all the light sources. You should make sure to turn off all your electronic devices at least 30 minutes before going to sleep. It has a lot to do with melatonin - the sleep hormone. When it gets dark, the production of melatonin increases and prepares you for the nighttime sleep. However, when you look into the bright screen before going to sleep, your body perceives it as daylight and the production of melatonin decreases. 
  • Relaxing activities before bed. If you’re experiencing stress and anxiety daily, then you could use some relaxing activities such as meditation, yoga, reading a book, listening to relaxing music, and so on. The only thing you should avoid is stimulating activities right before going to sleep. This way, you’ll allow yourself to relax and sleep better. 
  • Healthy lifestyle. Eating healthy foods, minimizing the intake of alcohol and tobacco is proven to make a major impact on your sleep. Thus, to improve the quality of your sleep and your health, in general, you should try to stay healthy. 
  • Exercising regularly. When exercising regularly, you will relieve stress and anxiety, and, will discharge yourself physically. Needless to say, it will allow you to fall asleep faster and sleep so much better. 
  • Get a comfortable mattress. While it might seem quite obvious, it might be time to change your old mattress and get a truly comfortable bed that will allow you to rest so much better. There are many different mattress types and designs. Those of you who love cushioning and conforming mattress should consider memory foam mattress, sleepers who are looking for a more bouncy alternative should take a look into innerspring and hybrid mattresses. And if you’re looking for a nature-friendly alternative, then latex mattress will be just the right pick. 
  • Try essential oils for sleep. Essential oils not only create a pleasant home environment, but they can also help you to fall asleep. For centuries people have been using essential oils such as valerian, chamomile, and lavender to promote sleep. Now it’s known that such oils can help not only to fall asleep but also improve the quality of your sleep. The most popular method is to use it together with an essential oil diffuser. So, give it a try.  

Polyphasic sleep: man sleeping

Thus, before trying all the risky techniques such as polyphasic sleep, you should try the alternative tips that are known to actually be working. 


As promised in the very beginning, I’ve introduced you to polyphasic sleep, which refers to the sleep pattern when taking multiple sleep sessions/naps during the 24-hour timeframe. 

The main questions that I’ve covered included: “Is polyphasic sleep healthy?” Is polyphasic sleep safe?”. As you already know, some studies revealed the positive impact that this sleep technique has on our memory and ability to concentrate.

On the other hand, the polyphasic sleep schedule can lead to sleep deprivation, insomnia, and other sleep disorders. The reason for that is the lack of sleep and the disruption of your sleep cycle due to unnatural rest schedule. 

Polyphasic sleep: woman sleeping

If you have no problems falling asleep, then there’s no reason to try this sleeping method - it doesn’t work for everyone. Instead, try some tips that actually work, including relaxing activities before going to sleep, a healthier lifestyle, daily exercises, turning off all devices before going to sleep, essential oils to relax and, of course, getting a comfortable mattress based on your wants and needs. 

If you’re not sure which bed to pick, then you can find more information that will help you decide here.

Patricia Celan

MD, Psychiatry Resident

Contributed By Patricia Celan, MD, Psychiatry Resident

Patricia is a post-graduate trainee in psychiatry, working in diagnosing and treating patients with psychiatric conditions. She is passionate about psychotherapy, especially in trauma, anxiety, and...

Read Full Bio...

Scientific References

Contributed by Patricia Celan, MD, Psychiatry Resident

1. Hartmut Schulz, and Piero Salzarulo: 'The Development of Sleep Medicine: A Historical Sketch'

2. Nava Zisapel: 'New perspectives on the role of melatonin in human sleep, circadian rhythms and their regulation'

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Recent User Reviews

Is it real?

Is it really more productive that usual sleeping?

Consider to try

Consider to try

Not able to sleep that much

I would never be able to sleep that much, I can make a nap sometimes but only when I’m very tired.

I wouldn't recommend polyphasic sleeping

I wouldn’t recommend polyphasic sleep to anyone, nothing’s better than night sleeping.

Just know

Just knowing about polyphasic and diphasic sleep. Wondering!

Too difficult for me!

I’ve tried it few years ago, and as a result I became a zombie, I had a lot of sleeping disorders, so I gave up on it.

Too much for me!

Biphasic would be possible for me, but not polyphasic, it's too much!!!

Too difficult for me!

I’ve tried it few years ago, and as a result I became a zombie, I had a lot of sleeping disorders, so I gave up on it.

for insomnia

I think it only for the one who have insomnia

Wondering about the topic

Wondering about the topic

Natural sleeping is the best!

Thanks for reviewing this important topic, sleeping is a science, it’s the third of our time on this earth. In my opinion, there is no better than natural night sleeping.

My sleeping pattern

I adopted a sleeping pattern as a mix between Dymaxion and Uberman, I understand it’s difficult to imagine for a lot of people, but I feel pretty good with it, I’m more productive.

Taking nap in afternoon

How about taking nap in the afternoon?

Helpful review

Very helpful content! I agree it’s not recommended, unless you can’t have a normal sleep.

Trying the Everyman method

I’m trying the Everyman method, my naps are getting better and better, I hope I’ll be able to maintain this rythm.

Impossible for me

Personally, i would never be able to sleep twice within 24 hours

Great article!

Thank you! Very informative review, thank you and keep up the good work!

Nice and complete

Really nice and complete article

sleep 8 hours

I think we should have 8 hours sleep a day

many health benefits

Just know that it has many health benefit


Is polyphasic sleep good?

For some people polyphasic sleep actually works wonders, they feel much more rested, relaxed and manage to stay focused. On the other hand, polyphasic sleep is widely associated with sleep deprivation and other sleep disorders. So, you should rather try more helpful techniques to fall asleep that you can find here.

What is polyphasic sleep?

Polyphasic sleep refers to taking multiple naps during the day. Many people practice this technique to improve the ability to concentrate and be more productive, however, it can often lead to disruptions in your sleep cycle.

What is a memory foam mattress?

Memory foam mattresses are created mostly from polyurethane and have additional chemicals added that increase its viscosity and density. It’s also often called “viscoelastic polyurethane foam”. In order to create the air movement and let your body “breath” while you sleep, it has open foam bubbles. Memory foam mattresses are created in a way to adapt to your body curves and to also recover their original shape after you get up. Therefore, this kind of top mattresses offer you the feeling as if is created specifically for you.

Do top rated mattresses offer a money-back guarantee? Is there a catch?

All of the top mattress brands offer a money-back guarantee. The free trial usually starts from 90 to 100 nights, and if you don’t like the mattress, you can simply give it back. The majority of best mattress providers will not only give your money back but will also come to get it for free. If the mattress provider is reputable, there won’t be any catch - everyone understands that you have to try the mattress before knowing if it fits you.

What is off-gassing? Is it poisonous?

Off-gassing refers to the odor which comes from a new mattress. It’s the process that happens when volatile organic chemicals (VOCs) leak out of the mattress foam into the air. Those chemicals include both human-made and natural components, including formaldehyde, chlorofluorocarbons (CFCs), benzene, trichloroethane, and perfluorocarbons. Top rated mattresses will have zero or very minimal off-gassing. Many of them are sent to the customer already after the off-gassing. Is it dangerous, though? Even though the smell can be unpleasant, there’s usually only a very small amount of chemicals that can do no harm to your health.

How long do top rated mattresses serve?

The durability of a mattress depends on the provider and the quality of the materials used. Usually, you get a 10-year warranty, which will be valid in case of any defects. Normally, mattresses will serve you from 7 to 10 years, or even longer. Thus, when you buy the best mattress, you should take it as a long-term investment.