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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Whole – by Dr. T. Colin Campbell
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Most of us have at least a broad idea of what we’re supposed to be eating, what nutrients we should be getting. Many of us look at labels, and try to get our daily dose of this and that and the other.
And what we don’t get from food? There are supplements.
Dr. Campbell thinks we can do better:
Perhaps most critical in this book, where it stands out from others (we may already know, for example, that we should try to eat diverse plants and whole foods) is its treatment of why many supplements aren’t helpful.
We tend to hear “supplements are a waste of money” and sometimes they are, sometimes they aren’t. How to know the difference?
Key: things directly made from whole food sources will tend to be better. Seems reasonable, but… why? The answer lies in what else those foods contain. An apple may contain a small amount of vitamin C, less than a vitamin C tablet, but also contains a whole host of other things—tiny phytonutrients, whose machinations are mostly still mysteries to us—that go with that vitamin C and help it work much better. Lab-made supplements won’t have those.
There’s a lot more to the book… A chunk of which is a damning critique of the US healthcare system (the author argues it would be better named a sicknesscare system). We also learn about getting a good balance of macro- and micronutrients from our diet rather than having to supplement so much.
The style is conversational, while not skimping on the science. The author has had more than 150 papers published in peer-reviewed journals, and is no stranger to the relevant academia. Here, however, he focuses on making things easily comprehensible to the lay reader.
In short: if you’ve ever wondered how you’re doing at getting a good nutritional profile, and how you could do better, this is definitely the book for you.
Click here to check out “Whole” on Amazon today, and level up your daily diet!
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Why We Remember – by Dr. Charan Ranganath
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As we get older, forgetfulness can become more of a spectre; the threat that one day it could be less “where did I put my sunglasses?” and more “who is this person claiming to be my spouse?”.
Dr. Ranganath explores in this work the science of memory, from a position of neurobiology, but also in application. How and why we remember, and how and why we forget, and how and why both are important.
There is a practical element to the book too; we read about things that increase our tendency to remember (and things that increase our tendency to forget), and how we can leverage that information to curate our memory in an active, ongoing basis.
The style of the book is quite casual in tone for such a serious topic, but there’s plenty of hard science too; indeed there are 74 pages of bibliography cited.
Bottom line: while filled with a lot of science, this is also a very human book, and a helpful guide to building and preserving our memory.
Click here to check out “Why We Remember”, and learn how to hold on to what matters the most!
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4 Ways Vaccine Skeptics Mislead You on Measles and More
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Measles is on the rise in the United States. In the first quarter of this year, the number of cases was about 17 times what it was, on average, during the same period in each of the four years before, according to the Centers for Disease Control and Prevention. Half of the people infected — mainly children — have been hospitalized.
It’s going to get worse, largely because a growing number of parents are deciding not to get their children vaccinated against measles as well as diseases like polio and pertussis. Unvaccinated people, or those whose immunization status is unknown, account for 80% of the measles cases this year. Many parents have been influenced by a flood of misinformation spouted by politicians, podcast hosts, and influential figures on television and social media. These personalities repeat decades-old notions that erode confidence in the established science backing routine childhood vaccines. KFF Health News examined the rhetoric and explains why it’s misguided:
The No-Big-Deal Trope
A common distortion is that vaccines aren’t necessary because the diseases they prevent are not very dangerous, or too rare to be of concern. Cynics accuse public health officials and the media of fear-mongering about measles even as 19 states report cases.
For example, an article posted on the website of the National Vaccine Information Center — a regular source of vaccine misinformation — argued that a resurgence in concern about the disease “is ‘sky is falling’ hype.” It went on to call measles, mumps, chicken pox, and influenza “politically incorrect to get.”
Measles kills roughly 2 of every 1,000 children infected, according to the CDC. If that seems like a bearable risk, it’s worth pointing out that a far larger portion of children with measles will require hospitalization for pneumonia and other serious complications. For every 10 measles cases, one child with the disease develops an ear infection that can lead to permanent hearing loss. Another strange effect is that the measles virus can destroy a person’s existing immunity, meaning they’ll have a harder time recovering from influenza and other common ailments.
Measles vaccines have averted the deaths of about 94 million people, mainly children, over the past 50 years, according to an April analysis led by the World Health Organization. Together with immunizations against polio and other diseases, vaccines have saved an estimated 154 million lives globally.
Some skeptics argue that vaccine-preventable diseases are no longer a threat because they’ve become relatively rare in the U.S. (True — due to vaccination.) This reasoning led Florida’s surgeon general, Joseph Ladapo, to tell parents that they could send their unvaccinated children to school amid a measles outbreak in February. “You look at the headlines and you’d think the sky was falling,” Ladapo said on a News Nation newscast. “There’s a lot of immunity.”
As this lax attitude persuades parents to decline vaccination, the protective group immunity will drop, and outbreaks will grow larger and faster. A rapid measles outbreak hit an undervaccinated population in Samoa in 2019, killing 83 people within four months. A chronic lack of measles vaccination in the Democratic Republic of the Congo led to more than 5,600 people dying from the disease in massive outbreaks last year.
The ‘You Never Know’ Trope
Since the earliest days of vaccines, a contingent of the public has considered them bad because they’re unnatural, as compared with nature’s bounty of infections and plagues. “Bad” has been redefined over the decades. In the 1800s, vaccine skeptics claimed that smallpox vaccines caused people to sprout horns and behave like beasts. More recently, they blame vaccines for ailments ranging from attention-deficit/hyperactivity disorder to autism to immune system disruption. Studies don’t back the assertions. However, skeptics argue that their claims remain valid because vaccines haven’t been adequately tested.
In fact, vaccines are among the most studied medical interventions. Over the past century, massive studies and clinical trials have tested vaccines during their development and after their widespread use. More than 12,000 people took part in clinical trials of the most recent vaccine approved to prevent measles, mumps, and rubella. Such large numbers allow researchers to detect rare risks, which are a major concern because vaccines are given to millions of healthy people.
To assess long-term risks, researchers sift through reams of data for signals of harm. For example, a Danish group analyzed a database of more than 657,000 children and found that those who had been vaccinated against measles as babies were no more likely to later be diagnosed with autism than those who were not vaccinated. In another study, researchers analyzed records from 805,000 children born from 1990 through 2001 and found no evidence to back a concern that multiple vaccinations might impair children’s immune systems.
Nonetheless, people who push vaccine misinformation, like candidate Robert F. Kennedy Jr., dismiss massive, scientifically vetted studies. For example, Kennedy argues that clinical trials of new vaccines are unreliable because vaccinated kids aren’t compared with a placebo group that gets saline solution or another substance with no effect. Instead, many modern trials compare updated vaccines with older ones. That’s because it’s unethical to endanger children by giving them a sham vaccine when the protective effect of immunization is known. In a 1950s clinical trial of polio vaccines, 16 children in the placebo group died of polio and 34 were paralyzed, said Paul Offit, director of the Vaccine Education Center at Children’s Hospital of Philadelphia and author of a book on the first polio vaccine.
The Too-Much-Too-Soon Trope
Several bestselling vaccine books on Amazon promote the risky idea that parents should skip or delay their children’s vaccines. “All vaccines on the CDC’s schedule may not be right for all children at all times,” writes Paul Thomas in his bestselling book “The Vaccine-Friendly Plan.” He backs up this conviction by saying that children who have followed “my protocol are among the healthiest in the world.”
Since the book was published, Thomas’ medical license was temporarily suspended in Oregon and Washington. The Oregon Medical Board documented how Thomas persuaded parents to skip vaccines recommended by the CDC, and reported that he “reduced to tears” a mother who disagreed. Several children in his care came down with pertussis and rotavirus, diseases easily prevented by vaccines, wrote the board. Thomas recommended fish oil supplements and homeopathy to an unvaccinated child with a deep scalp laceration, rather than an emergency tetanus vaccine. The boy developed severe tetanus, landing in the hospital for nearly two months, where he required intubation, a tracheotomy, and a feeding tube to survive.
The vaccination schedule recommended by the CDC has been tailored to protect children at their most vulnerable points in life and minimize side effects. The combination measles, mumps, and rubella vaccine isn’t given for the first year of a baby’s life because antibodies temporarily passed on from their mother can interfere with the immune response. And because some babies don’t generate a strong response to that first dose, the CDC recommends a second one around the time a child enters kindergarten because measles and other viruses spread rapidly in group settings.
Delaying MMR doses much longer may be unwise because data suggests that children vaccinated at 10 or older have a higher chance of adverse reactions, such as a seizure or fatigue.
Around a dozen other vaccines have discrete timelines, with overlapping windows for the best response. Studies have shown that MMR vaccines may be given safely and effectively in combination with other vaccines.
’They Don’t Want You to Know’ Trope
Kennedy compares the Florida surgeon general to Galileo in the introduction to Ladapo’s new book on transcending fear in public health. Just as the Roman Catholic inquisition punished the renowned astronomer for promoting theories about the universe, Kennedy suggests that scientific institutions oppress dissenting voices on vaccines for nefarious reasons.
“The persecution of scientists and doctors who dare to challenge contemporary orthodoxies is not a new phenomenon,” Kennedy writes. His running mate, lawyer Nicole Shanahan, has campaigned on the idea that conversations about vaccine harms are censored and the CDC and other federal agencies hide data due to corporate influence.
Claims like “they don’t want you to know” aren’t new among the anti-vaccine set, even though the movement has long had an outsize voice. The most listened-to podcast in the U.S., “The Joe Rogan Experience,” regularly features guests who cast doubt on scientific consensus. Last year on the show, Kennedy repeated the debunked claim that vaccines cause autism.
Far from ignoring that concern, epidemiologists have taken it seriously. They have conducted more than a dozen studies searching for a link between vaccines and autism, and repeatedly found none. “We have conclusively disproven the theory that vaccines are connected to autism,” said Gideon Meyerowitz-Katz, an epidemiologist at the University of Wollongong in Australia. “So, the public health establishment tends to shut those conversations down quickly.”
Federal agencies are transparent about seizures, arm pain, and other reactions that vaccines can cause. And the government has a program to compensate individuals whose injuries are scientifically determined to result from them. Around 1 to 3.5 out of every million doses of the measles, mumps, and rubella vaccine can cause a life-threatening allergic reaction; a person’s lifetime risk of death by lightning is estimated to be as much as four times as high.
“The most convincing thing I can say is that my daughter has all her vaccines and that every pediatrician and public health person I know has vaccinated their kids,” Meyerowitz-Katz said. “No one would do that if they thought there were serious risks.”
KFF Health News is a national newsroom that produces in-depth journalism about health issues and is one of the core operating programs at KFF—an independent source of health policy research, polling, and journalism. Learn more about KFF.
Subscribe to KFF Health News’ free Morning Briefing.
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Makkō-Hō – by Haruka Nagai
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We’ve all heard the claims, “Fluent in 3 Months!”, “Russian in Two Weeks!”, “Overnight Mandarin Chinese”, “15-Minute Arabic!”, “Instant Italian!”.
We see the same in the world of health and fitness too. So how does this one’s claim of “five minutes’ physical fitness” hold up?
Well, it is 5 minutes per day. And indeed, the author writes:
❝The total time [to do these exercises], then, is only one minute and thirty seconds. This series I call one round. When it has been completed, execute another complete round. You should find the exercises easier to do the second time. Executed this way, the exercsies will prove very effective, though they take only three minutes in all. After you have leaned back into the final position, you must remain in that posture for one minute. That brings the total time to four minutes. Even when [some small additions] are added, it takes only five minutes at most.❞
The exercises themselves are from makkō-hō, which is a kind of Japanese dynamic yoga. They involve repetitions of (mostly) moving stretches with good form, and are excellent for mobility and general health, keeping us supple and robust as we get older.
The text descriptions are clear, as are the diagrams and photos. The language is a little dated, as this book was written in the 1970s, but the techniques themselves are timeless.
Bottom line: consider it a 5-minute anti-aging regimen. And, as Nagai says, “the person who cannot find 5 minutes out of 24 hours, was never truly interested in their health”.
Click here to check out Makkō-Hō and schedule your five minutes!
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Cooking for Longevity – by Nisha Melvani
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Before it gets to the recipes, this book kicks off with a lot of science (much more than is usual for even healthy-eating recipe books), demystifying more nutrients than most people think of on a daily basis, what they do and where to get them, and even how to enhance nutrient absorption.
As well as an up-front ingredients list, we additionally get not just meal planning advice in the usual sense of the word, but also advice on timing various aspects of nutrition in order to enjoy the best metabolic benefits.
The recipes themselves are varied and good. It’s rare to find a recipe book that doesn’t include some redundant recipes, and this one’s no exception, but it’s better to have too much information than too little, so it’s perhaps no bad thing that all potentially necessary bases are covered.
In terms of how well it delivers on the title’s promised “cooking for longevity” and the subtitle’s promised “boosting healthspan”, the science is good; very consistent with what we write here at 10almonds, and well-referenced too.
Bottom line: if you’d like recipes to help you live longer and more healthily, then this book has exactly that.
Click here to check out Cooking For Longevity, and cook for longevity!
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What is HRT? HRT and Hormones Explained
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In this short video, Dr. Sophie Newton explains how menopausal HRT, sometimes called just MHT, is the use of exogenous (didn’t come from your body) to replace/supplement the endogenous hormones (made in your body) that aren’t being made in the quantities that would result in ideal health.
Bioidentical hormones are, as the name suggests, chemically identical to those made in the body; there is no difference, all the way down to the atomic structure.
People are understandably wary of “putting chemicals into the body”, but in fact, everything is a chemical and those chemicals are also found in your body, just not in the numbers that we might always like.
In the case of hormones, these chemical messengers are simply there to tell cells what to do, so having the correct amount of hormones ensures that all the cells that need to get a certain message, get it.
In the case of estrogen specifically, while it’s considered a sex hormone (and it is), it’s responsible for a lot more than just the reproductive system, which is why many people without correct estrogen levels (such as peri- or post-menopause, though incorrect levels can happen earlier in life for other reasons too) can severely feel their absence in a whole stack of ways.
What ways? More than we can list here, but some are discussed in the video:
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Want to know more?
You might like our previous main features:
- What Does “Balance Your Hormones” Even Mean?
- What You Should Have Been Told About The Menopause Beforehand
- Menopausal HRT: Bioidentical vs Animal
Take care!
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