Could Just Two Hours Sleep Per Day Be Enough?

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Polyphasic Sleep… Super-Schedule Or An Idea Best Put To Rest?

What is it?

Let’s start by defining some terms:

  • Monophasic sleep—sleeping in one “chunk” per day. For example, a good night’s “normal” sleep.
  • Biphasic sleep—sleeping in two “chunks” per day. Typically, a shorter night’s sleep, with a nap usually around the middle of the day / early afternoon.
  • Polyphasic sleep—sleeping in two or more “chunks per day”. Some people do this in order to have more hours awake per day, to do things. The idea is that sleeping this way is more efficient, and one can get enough rest in less time. The most popular schedules used are:
    • The Überman schedule—six evenly-spaced 20-minute naps, one every four hours, throughout the 24-hour day. The name is a semi-anglicized version of the German word Übermensch, “Superman”.
    • The Everyman schedule—a less extreme schedule, that has a three-hours “long sleep” during the night, and three evenly-spaced 20-minute naps during the day, for a total of 4 hours sleep.

There are other schedules, but we’ll focus on the most popular ones here.

Want to learn about the others? Visit: Polyphasic.Net (a website by and for polyphasic sleep enthusiasts)

Some people have pointed to evidence that suggests humans are naturally polyphasic sleepers, and that it is only modern lifestyles that have forced us to be (mostly) monophasic.

There is at least some evidence to suggest that when environmental light/dark conditions are changed (because of extreme seasonal variation at the poles, or, as in this case, because of artificial changes as part of a sleep science experiment), we adjust our sleeping patterns accordingly.

The counterpoint, of course, is that perhaps when at the mercy of long days/nights at the poles, or no air-conditioning to deal with the heat of the day in the tropics, that perhaps we were forced to be polyphasic, and now, with modern technology and greater control, we are free to be monophasic.

Either way, there are plenty of people who take up the practice of polyphasic sleep.

Ok, But… Why?

The main motivation for trying polyphasic sleep is simply to have more hours in the day! It’s exciting, the prospect of having 22 hours per day to be so productive and still have time over for leisure.

A secondary motivation for trying polyphasic sleep is that when the brain is sleep-deprived, it will prioritize REM sleep. Here’s where the Überman schedule becomes perhaps most interesting:

The six evenly-spaced naps of the Überman schedule are each 20 minutes long. This corresponds to the approximate length of a normal REM cycle.

Consequently, when your head hits the pillow, you’ll immediately begin dreaming, and at the end of your dream, the alarm will go off.

Waking up at the end of a dream, when one hasn’t yet entered a non-REM phase of sleep, will make you more likely to remember it. Similarly, going straight into REM sleep will make you more likely to be aware of it, thus, lucid dreaming.

Read: Sleep fragmentation and lucid dreaming (actually a very interesting and informative lucid dreaming study even if you don’t want to take up polyphasic sleep)

Six 20-minute lucid-dreaming sessions per day?! While awake for the other 22 hours?! That’s… 24 hours per day of wakefulness to use as you please! What sorcery is this?

Hence, it has quite an understandable appeal.

Next Question: Does it work?

Can we get by without the other (non-REM) kinds of sleep?

According to Überman cycle enthusiasts: Yes! The body and brain will adapt.

According to sleep scientists: No! The non-REM slow-wave phases of sleep are essential

Read: Adverse impact of polyphasic sleep patterns in humans—Report of the National Sleep Foundation sleep timing and variability consensus panel

(if you want to know just how bad it is… the top-listed “similar article” is entitled “Suicidal Ideation”)

But what about, for example, the Everman schedule? Three hours at night is enough for some non-REM sleep, right?

It is, and so it’s not as quickly deleterious to the health as the Überman schedule. But, unless you are blessed with rare genes that allow you to operate comfortably on 4 hours per day (you’ll know already if that describes you, without having to run any experiment), it’s still bad.

Adults typically need 7–9 hours of sleep per night, and if you don’t get it, you’ll accumulate a sleep debt. And, importantly:

When you accumulate sleep debt, you are borrowing time at a very high rate of interest!

And, at risk of laboring the metaphor, but this is important too:

Not only will you have to pay it back soon (with interest), you will be hounded by the debt collection agents—decreased cognitive ability and decreased physical ability—until you pay up.

In summary:

  • Polyphasic sleep is really very tempting
  • It will give you more hours per day (for a while)
  • It will give the promised lucid dreaming benefits (which is great until you start micronapping between naps, this is effectively a mini psychotic break from reality lasting split seconds each—can be deadly if behind the wheel of a car, for instance!)
  • It is unequivocally bad for the health and we do not recommend it

Bottom line:

Some of the claimed benefits are real, but are incredibly short-term, unsustainable, and come at a cost that’s far too high. We get why it’s tempting, but ultimately, it’s self-sabotage.

(Sadly! We really wanted it to work, too…)

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  • The Reason You’re Alone

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    If you are feeling lonely, then there are likely reasons why, as Kurtzgesagt explains:

    Why it happens and how to fix it

    Many people feel lonely and disconnected, often not knowing how to make new friends. And yet, social connection strongly predicts happiness, while lack of it is linked to diseases and a shorter life.

    One mistake that people make is thinking it has to be about shared interests; that can help, but proximity and shared time are much more important.

    Another stumbling block for many is that adult responsibilities and distractions (work, kids, technology) often take priority over friendships—but loneliness is surprisingly highest among young people, worsened by the pandemic’s impact on social interactions.

    And even when friendships are made, they fade without attention, often accidentally, impacting both people involved. Other friendships can be lost following big life changes such as moving house or the end of a relationship. And for people above a certain advanced age, friendship groups can shrink due to death, if one’s friends are all in the same age group.

    But, all is not lost. We can make friends with people of any age, and old friendships can be revived by a simple invitation. We can also take a “build it and they will come” approach, by organizing events and being the one who invites others.

    It’s easy to fear rejection—most people do—but it’s worth overcoming for the potential rewards. That said, building friendships requires time, patience, caring about others, and being open about yourself, which can involve a degree of vulnerability too.

    In short: be laid-back while still prioritizing friendships, show genuine interest, and stay open to social opportunities.

    For more on all of this, enjoy:

    Click Here If The Embedded Video Doesn’t Load Automatically!

    Want to learn more?

    You might also like to read:

    How To Beat Loneliness & Isolation

    Take care!

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  • Fasting, eating earlier in the day or eating fewer meals – what works best for weight loss?

    10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.

    Globally, one in eight people are living with obesity. This is an issue because excess fat increases the risk of type 2 diabetes, heart disease and certain cancers.

    Modifying your diet is important for managing obesity and preventing weight gain. This might include reducing your calorie intake, changing your eating patterns and prioritising healthy food.

    But is one formula for weight loss more likely to result in success than another? Our new research compared three weight-loss methods, to see if one delivered more weight loss than the others:

    • altering calorie distribution – eating more calories earlier rather than later in the day
    • eating fewer meals
    • intermittent fasting.

    We analysed data from 29 clinical trials involving almost 2,500 people.

    We found that over 12 weeks or more, the three methods resulted in similar weight loss: 1.4–1.8kg.

    So if you do want to lose weight, choose a method that works best for you and your lifestyle.

    chalermphon_tiam/Shutterstock

    Eating earlier in the day

    When our metabolism isn’t functioning properly, our body can’t respond to the hormone insulin properly. This can lead to weight gain, fatigue and can increase the risk of a number of chronic diseases such as diabetes.

    Eating later in the day – with a heavy dinner and late-night snacking – seems to lead to worse metabolic function. This means the body becomes less efficient at converting food into energy, managing blood sugar and regulating fat storage.

    In contrast, consuming calories earlier in the day appears to improve metabolic function.

    However, this might not be the case for everyone. Some people naturally have an evening “chronotype”, meaning they wake up and stay up later.

    People with this chronotype appear to have less success losing weight, no matter the method. This is due to a combination of factors including genes, an increased likelihood to have a poorer diet overall and higher levels of hunger hormones.

    Eating fewer meals

    Skipping breakfast is common, but does it hinder weight loss? Or is a larger breakfast and smaller dinner ideal?

    While frequent meals may reduce disease risk, recent studies suggest that compared to eating one to two meals a day, eating six times a day might increase weight loss success.

    However, this doesn’t reflect the broader research, which tends to show consuming fewer meals can lead to greater weight loss. Our research suggests three meals a day is better than six. The easiest way to do this is by cutting out snacks and keeping breakfast, lunch and dinner.

    Most studies compare three versus six meals, with limited evidence on whether two meals is better than three.

    However, front-loading your calories (consuming most of your calories between breakfast and lunch) appears to be better for weight loss and may also help reduce hunger across the day. But more studies with a longer duration are needed.

    Fasting, or time-restricted eating

    Many of us eat over a period of more than 14 hours a day.

    Eating late at night can throw off your body’s natural rhythm and alter how your organs function. Over time, this can increase your risk of type 2 diabetes and other chronic diseases, particularly among shift workers.

    Time-restricted eating, a form of intermittent fasting, means eating all your calories within a six- to ten-hour window during the day when you’re most active. It’s not about changing what or how much you eat, but when you eat it.

    Man looks at his watch
    Some people limit their calories to a six hour window, while others opt for ten hours. Shutterstock/NIKS ADS

    Animal studies suggest time-restricted eating can lead to weight loss and improved metabolism. But the evidence in humans is still limited, especially about the long-term benefits.

    It’s also unclear if the benefits of time-restricted eating are due to the timing itself or because people are eating less overall. When we looked at studies where participants ate freely (with no intentional calorie limits) but followed an eight-hour daily eating window, they naturally consumed about 200 fewer calories per day.

    What will work for you?

    In the past, clinicians have thought about weight loss and avoiding weight gain as a simile equation of calories in and out. But factors such as how we distribute our calories across the day, how often we eat and whether we eat late at night may also impact our metabolism, weight and health.

    There are no easy ways to lose weight. So choose a method, or combination of methods, that suits you best. You might consider

    • aiming to eat in an eight-hour window
    • consuming your calories earlier, by focusing on breakfast and lunch
    • opting for three meals a day, instead of six.

    The average adult gains 0.4 to 0.7 kg per year. Improving the quality of your diet is important to prevent this weight gain and the strategies above might also help.

    Finally, there’s still a lot we don’t know about these eating patterns. Many existing studies are short-term, with small sample sizes and varied methods, making it hard to make direct comparisons.

    More research is underway, including well-controlled trials with larger samples, diverse populations and consistent methods. So hopefully future research will help us better understand how altering our eating patterns can result in better health.

    Hayley O’Neill, Assistant Professor, Faculty of Health Sciences and Medicine, Bond University and Loai Albarqouni, Assistant Professor | NHMRC Emerging Leadership Fellow, Bond University

    This article is republished from The Conversation under a Creative Commons license. Read the original article.

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  • The S.T.E.P.S. To A Healthier Heart

    10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.

    Stepping Into Better Heart Health

    This is Dr. Jennifer H. Mieres, FACC, FAHA, MASNC. she’s an award-winning (we counted 9 major awards) professor of cardiology, and a leading advocate for women’s heart health. This latter she’s done via >70 scientific publications, >100 research presentations at national and international conferences, 3 books so far, and 4 documentaries, including the Emmy-nominated “A Woman’s Heart”.

    What does she want us to know?

    A lot of her work is a top-down approach, working to revolutionize the field of cardiology in its application, to result in far fewer deaths annually. Which is fascinating, but unless you’re well-placed in that industry, not something too actionable as an individual (if you are well-placed in that industry, do look her up, of course).

    For the rest of us…

    Dr. Mieres’ S.T.E.P.S. to good heart health

    She wants us to do the following things:

    1) Stock your kitchen with heart health in mind

    This is tied to the third item in the list of course, but it’s a critical step not to be overlooked. It’s all very well to know “eat more fiber; eat less red meat” and so forth, but if you go to your kitchen and what’s there is not conducive to heart health, you’re just going to do the best with what’s available.

    Instead, actually buy foods that are high in fiber, and preferably, foods that you like. Not a fan of beans? Don’t buy them. Love pasta? Go wholegrain. Like leafy greens in principle, but they don’t go with what you cook? Look up some recipes, and then buy them.

    Love a beef steak? Well we won’t lie to you, that is not good for your heart, but make it a rare option—so to speak—and enjoy it mindfully (see also: mindful eating) once in a blue moon for a special occasion, rather than “I don’t know what to cook tonight, so sizzle sizzle I guess”.

    Meal planning goes a long way for this one! And if meal-planning sounds like an overwhelming project to take on, then consider trying one of the many healthy-eating meal kit services that will deliver ingredients (and their recipes) to your door—opting for a plants-forward plan, and the rest should fall into place.

    2) Take control of your activity

    Choose to move! Rather than focusing on what you can’t do (let’s say, those 5am runs, or your regularly-scheduled, irregularly attended, gym sessions), focus on what you can do, and do it.

    See also: No-Exercise Exercise!

    3) Eat for a healthier heart

    This means following through on what you did on the first step, and keeping it that way. Buying fresh fruit and veg is great, but you also have to actually eat it. Do not let the perishables perish!

    For you too, dear reader, are perishable (and would presumably like to avoid perishing).

    This item in the list may seem flippant, but actually this is about habit-forming, and without it, the whole plan will grind to a halt a few days after your first heart-health-focused shopping trip.

    See also: Where Nutrition Meets Habits!

    4) Partner with your doctor, family, and friends

    Good relationships, both professional and personal, count for a lot. Draw up a plan with your doctor; don’t just guess at when to get this or that checked—or what to do about it if the numbers aren’t to your liking.

    Partnership with your doctor goes both ways, incidentally. Read up, have opinions, discuss them! Doing so will ultimately result in better care than just going in blind and coming out with a recommendation you don’t understand and just trust (but soon forget, because you didn’t understand).

    And as for family and friends, this is partly about social factors—we tend to influence, and be influenced by, those around us. It can be tricky to be on a health kick if your partner wants take-out every night, so some manner of getting everyone on the same page is important, be it by compromise or, in an ideal world, gradually trending towards better health. But any such changes must come from a place of genuine understanding and volition, otherwise at best they won’t stick, and at worst they’ll actively create a pushback.

    Same goes for exercise as for diet—exercising together is a good way to boost commitment, especially if it’s something fun (dance classes are a fine example that many couples enjoy, for example).

    5) Sleep more, stress less, savor life

    These things matter a lot! Many people focus on cutting down salt or saturated fat, and that can be good if otherwise consumed to excess, but for most people they’re not the most decisive factors:

    Hypertension: Factors Far More Relevant Than Salt ← sleep features here!

    Stress is also a huge one, and let’s put it this way: people more often have heart attacks during a moment of excessive emotional stress—not during a moment when they had a bit too much butter on their toast.

    It’s not even just that acute stress is the trigger, it’s that chronic stress is a contributory factor that erodes the body’s ability to handle the acute stress.

    Changing this may seem “easier said than done” because often the stressors are external (e.g. work pressure, financial worries, caring for a sick relative, relationship troubles, major life change, etc), but it is possible to find peace even in the chaos of life:

    How To Manage Chronic Stress

    Want to know more from Dr. Mieres?

    You might like this book of hers, which goes into each of the above items in much more depth than we have room to here:

    Heart Smarter for Women: Six Weeks to a Healthier Heart – by Dr. Jennifer Mieres

    Enjoy!

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  • How To Nap Like A Pro (No More “Sleep Hangovers”!)

    10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.

    How To Be An Expert Nap-Artist

    There’s a lot of science to say that napping can bring us health benefits—but mistiming it can just make us more tired. So, how to get some refreshing shut-eye, without ending up with a case of the midday melatonin blues?

    First, why do we want to nap?

    Well, maybe we’re just tired, but there are specific benefits even if we’re not. For example:

    What can go wrong?

    There are two main things that can go wrong, physiologically speaking:

    1. We can overdo it, and not sleep well at night
    2. We can awake groggy and confused and tired

    The first is self-explanatory—it messes with the circadian rhythm. For this reason, we should not sleep more than 90 minutes during the day. If that seems like a lot, and maybe you’ve heard that we shouldn’t sleep more than half an hour, there is science here, so read on…

    The second is a matter of sleep cycles. Our brain naturally organizes our sleep into multiples of 20-minute segments, with a slight break of a few minutes between each. Consequently, naps should be:

    • 25ish minutes
    • 40–45 minutes
    • 90ish minutes

    If you wake up mid-cycle—for example, because your alarm went off, or someone disturbed you, or even because you needed to pee, you will be groggy, disoriented, and exhausted.

    For this reason, a nap of one hour (a common choice, since people like “round” numbers) is a recipe for disaster, and will only work if you take 15 minutes to fall asleep. In which case, it’d really be a nap of 45 minutes, made up of two 20-minute sleep cycles.

    Some interruptions are better/worse than others

    If you’re in light or REM sleep, a disruption will leave you not very refreshed, but not wiped out either. And as a bonus, if you’re interrupted during a REM cycle, you’re more likely to remember your dreams.

    If you’re in deep sleep, a disruption will leave you with what feels like an incredible hangover, minus the headache, and you’ll be far more tired than you were before you started the nap.

    The best way to nap

    Taking these factors into account, one of the “safest” ways to nap is to set your alarm for the top end of the time-bracket above the one you actually want to nap for (e.g., if you want to nap for 25ish minutes, set your alarm for 45).

    Unless you’re very sleep-deprived, you’ll probably wake up briefly after 20–25 minutes of sleep. This may seem like nearer 30 minutes, if it took you some minutes to fall asleep!

    If you don’t wake up then, or otherwise fail to get up, your alarm will catch you later at what will hopefully be between your next sleep cycles, or at the very least not right in the middle of one.

    When you wake up from a nap before your alarm, get up. This is not the time for “5 more minutes” because “5 more minutes” will never, ever, be refreshing.

    Rest well!

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  • Treat Your Own Back – by Robin McKenzie

    10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.

    A quick note about the author first: he’s a physiotherapist and not a doctor, but with over 40 years of practice to his name and 33 letters after his name (CNZM OBE FCSP (Hon) FNZSP (Hon) Dip MDT Dip MT), he seems to know his stuff. And certainly, if you visit any physiotherapist, they will probably have some of his books on their own shelves.

    This book is intended for the layperson, and as such, explains everything that you need to know, in order to diagnose and treat your back. To this end, he includes assorted tests to perform, a lot of details about various possible back conditions, and then exercises to fix it, i.e. fix whatever you have now learned that the problem is, in your case (if indeed you didn’t know for sure already).

    Of course, not everything can be treated by exercises, and he does point to what other things may be necessary in those cases, but for the majority, a significant improvement (if not outright symptom-free status) can be enjoyed by applying the techniques described in this book.

    Bottom line: for most people, this book gives you the tools required to do exactly what the title says.

    Click here to check out Treat Your Own Back, and treat your own back!

    PS: if your issue is not with your back, we recommend you check out his other books in the series (neck, shoulder, hip, knee, ankle) 😎

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  • Voluntary assisted dying is different to suicide. But federal laws conflate them and restrict access to telehealth

    10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.

    Voluntary assisted dying is now lawful in every Australian state and will soon begin in the Australian Capital Territory.

    However, it’s illegal to discuss it via telehealth. That means people who live in rural and remote areas, or those who can’t physically go to see a doctor, may not be able to access the scheme.

    A federal private members bill, introduced to parliament last week, aims to change this. So what’s proposed and why is it needed?

    What’s wrong with the current laws?

    Voluntary assisted dying doesn’t meet the definition of suicide under state laws.

    But the Commonwealth Criminal Code prohibits the discussion or dissemination of suicide-related material electronically.

    This opens doctors to the risk of criminal prosecution if they discuss voluntary assisted dying via telehealth.

    Successive Commonwealth attorneys-general have failed to address the conflict between federal and state laws, despite persistent calls from state attorneys-general for necessary clarity.

    This eventually led to voluntary assistant dying doctor Nicholas Carr calling on the Federal Court of Australia to resolve this conflict. Carr sought a declaration to exclude voluntary assisted dying from the definition of suicide under the Criminal Code.

    In November, the court declared voluntary assisted dying was considered suicide for the purpose of the Criminal Code. This meant doctors across Australia were prohibited from using telehealth services for voluntary assisted dying consultations.

    Last week, independent federal MP Kate Chaney introduced a private members bill to create an exemption for voluntary assisted dying by excluding it as suicide for the purpose of the Criminal Code. Here’s why it’s needed.

    Not all patients can physically see a doctor

    Defining voluntary assisted dying as suicide in the Criminal Code disproportionately impacts people living in regional and remote areas. People in the country rely on the use of “carriage services”, such as phone and video consultations, to avoid travelling long distances to consult their doctor.

    Other people with terminal illnesses, whether in regional or urban areas, may be suffering intolerably and unable to physically attend appointments with doctors.

    The prohibition against telehealth goes against the principles of voluntary assisted dying, which are to minimise suffering, maximise quality of life and promote autonomy.

    Old hands hold young hands
    Some people aren’t able to attend doctors’ appointments in person.
    Jeffrey M Levine/Shutterstock

    Doctors don’t want to be involved in ‘suicide’

    Equating voluntary assisted dying with suicide has a direct impact on doctors, who fear criminal prosecution due to the prohibition against using telehealth.

    Some doctors may decide not to help patients who choose voluntary assisted dying, leaving patients in a state of limbo.

    The number of doctors actively participating in voluntary assisted dying is already low. The majority of doctors are located in metropolitan areas or major regional centres, leaving some locations with very few doctors participating in voluntary assisted dying.

    It misclassifies deaths

    In state law, people dying under voluntary assisted dying have the cause of their death registered as “the disease, illness or medical condition that was the grounds for a person to access voluntary assisted dying”, while the manner of dying is recorded as voluntary assisted dying.

    In contrast, only coroners in each state and territory can make a finding of suicide as a cause of death.

    In 2017, voluntary assisted dying was defined in the Coroners Act 2008 (Vic) as not a reportable death, and thus not suicide.

    The language of suicide is inappropriate for explaining how people make a decision to die with dignity under the lawful practice of voluntary assisted dying.

    There is ongoing taboo and stigma attached to suicide. People who opt for and are lawfully eligible to access voluntary assisted dying should not be tainted with the taboo that currently surrounds suicide.

    So what is the solution?

    The only way to remedy this problem is for the federal government to create an exemption in the Criminal Code to allow telehealth appointments to discuss voluntary assisted dying.

    Chaney’s private member’s bill is yet to be debated in federal parliament.

    If it’s unsuccessful, the Commonwealth attorney-general should pass regulations to exempt voluntary assisted dying as suicide.

    A cooperative approach to resolve this conflict of laws is necessary to ensure doctors don’t risk prosecution for assisting eligible people to access voluntary assisted dying, regional and remote patients have access to voluntary assisted dying, families don’t suffer consequences for the erroneous classification of voluntary assisted dying as suicide, and people accessing voluntary assisted dying are not shrouded with the taboo of suicide when accessing a lawful practice to die with dignity.

    Failure to change this will cause unnecessary suffering for patients and doctors alike.The Conversation

    Michaela Estelle Okninski, Lecturer of Law, University of Adelaide; Marc Trabsky, Associate professor, La Trobe University, and Neera Bhatia, Associate Professor in Law, Deakin University

    This article is republished from The Conversation under a Creative Commons license. Read the original article.

    Don’t Forget…

    Did you arrive here from our newsletter? Don’t forget to return to the email to continue learning!

    Learn to Age Gracefully

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