Why 7 Hours Sleep Is Not Enough
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How Sleep-Deprived Are You, Really?
This is Dr. Matthew Walker. He’s a neuroscientist and sleep specialist, and is the Director of the Center for Human Sleep Science at UC Berkeley’s Department of Psychology. He’s also the author of the international bestseller “Why We Sleep”.
What does he want us to know?
Sleep deprivation is more serious than many people think it is. After about 16 hours without sleep, the brain begins to fail, and needs more than 7 hours of sleep to “reset” cognitive performance.
Note: note “seven or more”, but “more than seven”.
After ten days with only 7 hours sleep (per day), Dr. Walker points out, the brain is as dysfunctional as it would be after going without sleep for 24 hours.
Here’s the study that sparked a lot of Dr. Walker’s work:
Importantly, in Dr. Walker’s own words:
❝Three full nights of recovery sleep (i.e., more nights than a weekend) are insufficient to restore performance back to normal levels after a week of short sleeping❞
~ Dr. Matthew Walker
See also: Why You Probably Need More Sleep
Furthermore: the sleep-deprived mind is unaware of how sleep-deprived it is.
You know how a drunk person thinks they can drive safely? It’s like that.
You do not know how sleep-deprived you are, when you are sleep-deprived!
For example:
❝(60.7%) did not signal sleepiness before a sleep fragment occurred in at least one of the four MWT trials❞
Source: Sleepiness is not always perceived before falling asleep in healthy, sleep-deprived subjects
Sleep efficiency matters
With regard to the 7–9 hours band for optimal health, Dr. Walker points out that the sleep we’re getting is not always the sleep we think we’re getting:
❝Assuming you have a healthy sleep efficiency (85%), to sleep 9 hours in terms of duration (i.e. to be a long-sleeper), you would need to be consistently in bed for 10 hours and 36 minutes a night. ❞
~ Dr. Matthew Walker
At the bottom end of that, by the way, doing the same math: to get only the insufficient 7 hours sleep discussed earlier, a with a healthy 85% sleep efficiency, you’d need to be in bed for 8 hours and 14 minutes per night.
The unfortunate implication of this: if you are consistently in bed for 8 hours and 14 minutes (or under) per night, you are not getting enough sleep.
“But what if my sleep efficiency is higher than 85%?”
It shouldn’t be.If your sleep efficiency is higher than 85%, you are sleep-deprived and your body is having to enforce things.
Want to know what your sleep efficiency is?
We recommend knowing this, by the way, so you might want to check out:
Head-To-Head Comparison of Google and Apple’s Top Sleep-Monitoring Apps
(they will monitor your sleep and tell you your sleep efficiency, amongst other things)
Want to know more?
You might like his book:
Why We Sleep: Unlocking the Power of Sleep and Dreams
…and/or his podcast:
…and for those who like videos, here’s his (very informative) TED talk:
Prefer text? Click here to read the transcript
Want to watch it, but not right now? Bookmark it for later
Enjoy!
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Mindfulness – by Olivia Telford
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Olivia Telford takes us on a tour of mindfulness, meditation, mindfulness meditation, and how each of these things impacts stress, anxiety, and depression—as well as less obvious things too, like productivity and relationships.
In the category of how much this is a “how-to-” guide… It’s quite a “how-to” guide. We’re taught how to meditate, we’re taught assorted mindfulness exercises, and we’re taught specific mindfulness interventions such as beating various life traps (e.g. procrastination, executive dysfunction, etc) with mindfulness.
The writing style is simple and to the point, explanatory and very readable. References are made to pop-science and hard science alike, and all in all, is not too far from the kind of writing you might expect to find here at 10almonds.
Bottom line: if you’d like to practice mindfulness meditation and want an easy “in”, or perhaps you’re curious and wonder what mindfulness could tangibly do for you and how, then this book is a great choice for that.
Click here to check out Mindfulness, and enjoy being more present in life!
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Getting Your Messy Life In Order
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Getting Your Messy Life In Order
We’ve touched on this before by recommending the book, but today we’re going to give an overview of the absolute most core essentials of the “Getting Things Done” method. If you’re unfamiliar, this will be enough to get you going. If you’re already familiar, this may be a handy reminder!
First, you’ll need:
- A big table
- A block of small memo paper squares—post-it note sized, but no need to be sticky.
- A block of A4 printer paper
- A big trash bag
Gathering everything
Gather up not just all your to-dos, but: all sources of to-dos, too, and anything else that otherwise needs “sorting”.
Put them all in one physical place—a dining room table may have enough room. You’ll need a lot of room because you’re going to empty our drawers of papers, unopened (or opened and set aside) mail. Little notes you made for yourself, things stuck on the fridge or memo boards. Think across all areas of your life, and anything you’re “supposed” to do, write it down on a piece of paper. No matter what area of your life, no matter how big or small.
Whether it’s “learn Chinese” or “take the trash out”, write it down, one item per piece of paper (hence the block of little memo squares).
Sorting everything
Everything you’ve gathered needs one of three things to happen:
- You need to take some action (put it in a “to do” pile)
- You may need it later sometime (put it in a “to file” pile)
- You don’t need it (put it in the big trash bag for disposal)
What happens next will soothe you
- Dispose of the things you put for disposal
- File the things for filing in a single alphabetical filing system. If you don’t have one, you’ll need to get one, so write that down and add it to the “to do” pile.
- You will now process your “to dos”
Processing the “to dos”
The pile you have left is now your “inbox”. It’s probably huge; later it’ll be smaller, maybe just a letter-tray on your desk.
Many of your “to dos” are actually not single action items, they’re projects. If something requires more than one step, it’s a project.
Take each item one-by-one. Do this in any order; you’re going to do this as quickly as possible! Now, ask yourself: is this a single-action item that I could do next, without having to do something else first?
- If yes: put it in a pile marked “next action”
- If no: put it in a pile marked “projects”.
Take a sheet of A4 paper and fold it in half. Write “Next Action” on it, and put your pile of next actions inside it.
Take a sheet of A4 paper per project and write the name of the project on it, for example “Learn Chinese”, or “Do taxes”. Put any actions relating to that project inside it.
Likely you don’t know yet what the first action will be, or else it’d be in your “Next Action” pile, so add an item to each project that says “Brainstorm project”.
Processing the “Next Action” pile
Again you want to do this as quickly as possible, in any order.
For each item, ask yourself “Do I care about this?” If the answer is no, ditch that item, and throw it out. That’s ok. Things change and maybe we no longer want or need to do something. No point in hanging onto it.
For each remaining item, ask yourself “can this be done in under 2 minutes?”.
- If yes, do it, now. Throw away the piece of paper for it when you’re done.
- If no, ask yourself:”could I usefully delegate this to someone else?” If the answer is yes, do so.
If you can’t delegate it, ask yourself: “When will be a good time to do this?” and schedule time for it. A specific, written-down, clock time on a specific calendar date. Input that into whatever you use for scheduling things. If you don’t already use something, just use the calendar app on whatever device you use most.
The mnemonic for the above process is “Do/Defer/Delegate/Ditch”
Processing projects:
If you don’t know where to start with a project, then figuring out where to start is your “Next Action” for that project. Brainstorm it, write down everything you’ll need to do, and anything that needs doing first.
The end result of this is:
- You will always, at any given time, have a complete (and accessible) view of everything you are “supposed” to do.
- You will always, at any given time, know what action you need to take next for a given project.
- You will always, when you designate “work time”, be able to get straight into a very efficient process of getting through your to-dos.
Keeping on top of things
- Whenever stuff “to do something with/about” comes to you, put it in your physical “inbox” place—as mentioned, a letter-tray on a desk should suffice.
- At the start of each working day, quickly process things as described above. This should be a small daily task.
- Once a week, do a weekly review to make sure you didn’t lose sight of something.
- Monthly, quarterly, and annual reviews can be a good practice too.
How to do those reviews? Topic for another day, perhaps.
Or:
Check out the website / Check out GTD apps / Check out the book
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‘I can’t quite shut it off’: Prevalence of insomnia a growing concern for women
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Tasha Werner, 43, gets up at 3:30 a.m. twice a week for her part-time job at a fitness centre in Calgary. After a five-hour shift, she is back home by 9 a.m. to homeschool her two children, aged 9 and 12. The hardest part of her position – stay-at-home mom, homeschool teacher and part-time worker – is the downtime “lost from my life,” says Werner.
A study by Howard M. Kravitz, a psychiatrist in Chicago, showed that up to 60 per cent of women experience sleep disorders due to hormonal changes linked to menopause. But there is an increasing prevalence of insomnia symptoms in women that may be attributed, in part, to societal changes.
“We live in a world that didn’t exist a generation ago. Now everyone is trying to figure it out,” says Michael Grandner, director of the Sleep and Health Research Program at the University of Arizona.
While women are no longer expected to stay at home, many who are employed outside the home also have the primary responsibility for family matters. And women aged 40 to 60 commonly fall within the “sandwich generation,” caring for both children and parents.
As women juggle their responsibilities, these duties can take a toll, both emotionally and practically.
Both Werner and her husband were raised in traditional homes; their mothers stayed at home to oversee childcare, cooking, grocery shopping and household duties. Initially, Werner and her husband followed a similar path, mirroring their parents’ lives as homemakers. “I think we just fell into what we were used to,” says Werner.
However, a notable shift in their family dynamics occurred once she started working outside the home.
Her children’s physical needs and illnesses have had major consequences on her sleep. If one of the children is sick with the flu, that’s “a week of not a lot of sleep during the night,” she says, “because that’s my job.” Many nights, she finds herself waking up between 1 a.m. and 3 a.m., worrying about how the kids are doing academically or behaviourally.
“We face a specific set of anxieties and a different set of pressures than men,” says Emma Kobil, who has been a therapist in Denver, Colo., for 15 years and is now an insomnia coach. There is so much pressure to be everything as a woman – to be an amazing homemaker and worker while maintaining a hot-rocking body and having a cool personality, to “be the cool mom but also the CEO, to follow your dreams and be the boss b****,” says Kobil.
And there’s an appeal to that concept. Daughters grow up viewing their moms as superwomen juggling responsibilities. But what isn’t always obvious are the challenges women face while managing their lives and the health issues they may encounter.
A study revealed that women are 41 per cent more at risk of insomnia than men.
A thorough study revealed that women are 41 per cent more at risk of insomnia than men. Beyond menopausal hormonal shifts, societal pressures, maternal concerns and the challenge of balancing multiple roles contribute to women’s increased susceptibility to insomnia.
Cyndi Aarrestad, 57, lives on a farm in Saskatchewan with her husband, Denis. Now an empty nester, Aarrestad fills her time working on the farm, keeping house, volunteering at her church and managing her small woodworking business. And she struggles with sleep.
Despite implementing some remedies, including stretching, drinking calming teas and rubbing her feet before bed, Aarrestad says achieving restful sleep has remained elusive for the past decade.
Two primary factors contribute to her sleep challenges — her inability to quiet her mind and hormonal hot flashes due to menopause. Faced with family and outside commitments, Aarrestad finds it challenging to escape night time’s mental chatter. “It’s a mom thing for me … I can’t quite shut it off.” Even as her children transitioned to young adulthood and moved out, the worries persisted, highlighting the lasting concerns moms have about their kids’ jobs, relationships and overall well-being.
Therapist Kobil says that every woman she’s ever worked with experiences this pressure to do everything, to be perfect. These women feel like they’re not measuring up. They’re encouraged to take on other people’s burdens; to be the confidante and the saviour in many ways; to sacrifice themselves. Sleep disruptions simply reflect the consequences of this pressure.
“They’re trying to fit 20 hours in a 24-hour day, and it doesn’t work,” says Grandner, the sleep specialist.
Grandner says that consistently sleeping six hours or less as an adult makes one 55 per cent more likely to become obese, 20 per cent more likely to develop high blood pressure, and 30 per cent more likely to develop Type 2 diabetes if you didn’t have it already. This lack of sleep makes you more likely to catch the flu. It makes vaccines less effective, and it increases your likelihood of developing depression and anxiety.
When is the time to change? Yesterday. Grandner warns that the sleep sacrifices made at a young age impact health later. But it’s never too late to make changes, he says, and “you do the best with what you’ve got.”
Kobil suggests a practical approach for women struggling with sleep. She emphasizes understanding that sleeplessness isn’t a threat and encourages a shift in mindset about being awake. Instead of fighting sleeplessness, she advises treating oneself kindly, recognizing the difficulty.
Kobil recommends creating a simple playbook with comforting activities for awake moments during the night. Just as you would comfort a child who’s afraid, she suggests being gentle with yourself, gradually changing the perception of wakefulness into a positive experience.
This article is republished from HealthyDebate under a Creative Commons license. Read the original article.
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Does intermittent fasting have benefits for our brain?
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Intermittent fasting has become a popular dietary approach to help people lose or manage their weight. It has also been promoted as a way to reset metabolism, control chronic disease, slow ageing and improve overall health.
Meanwhile, some research suggests intermittent fasting may offer a different way for the brain to access energy and provide protection against neurodegenerative diseases like Alzheimer’s disease.
This is not a new idea – the ancient Greeks believed fasting enhanced thinking. But what does the modern-day evidence say?
First, what is intermittent fasting?
Our diets – including calories consumed, macronutrient composition (the ratios of fats, protein and carbohydrates we eat) and when meals are consumed – are factors in our lifestyle we can change. People do this for cultural reasons, desired weight loss or potential health gains.
Intermittent fasting consists of short periods of calorie (energy) restriction where food intake is limited for 12 to 48 hours (usually 12 to 16 hours per day), followed by periods of normal food intake. The intermittent component means a re-occurrence of the pattern rather than a “one off” fast.
Food deprivation beyond 24 hours typically constitutes starvation. This is distinct from fasting due to its specific and potentially harmful biochemical alterations and nutrient deficiencies if continued for long periods.
4 ways fasting works and how it might affect the brain
The brain accounts for about 20% of the body’s energy consumption.
Here are four ways intermittent fasting can act on the body which could help explain its potential effects on the brain.
1. Ketosis
The goal of many intermittent fasting routines is to flip a “metabolic switch” to go from burning predominately carbohydrates to burning fat. This is called ketosis and typically occurs after 12–16 hours of fasting, when liver and glycogen stores are depleted. Ketones – chemicals produced by this metabolic process – become the preferred energy source for the brain.
Due to this being a slower metabolic process to produce energy and potential for lowering blood sugar levels, ketosis can cause symptoms of hunger, fatigue, nausea, low mood, irritability, constipation, headaches, and brain “fog”.
At the same time, as glucose metabolism in the brain declines with ageing, studies have shown ketones could provide an alternative energy source to preserve brain function and prevent age-related neurodegeneration disorders and cognitive decline.
Consistent with this, increasing ketones through supplementation or diet has been shown to improve cognition in adults with mild cognitive decline and those at risk of Alzheimer’s disease respectively.
2. Circadian syncing
Eating at times that don’t match our body’s natural daily rhythms can disrupt how our organs work. Studies in shift workers have suggested this might also make us more prone to chronic disease.
Time-restricted eating is when you eat your meals within a six to ten-hour window during the day when you’re most active. Time-restricted eating causes changes in expression of genes in tissue and helps the body during rest and activity.
A 2021 study of 883 adults in Italy indicated those who restricted their food intake to ten hours a day were less likely to have cognitive impairment compared to those eating without time restrictions.
3. Mitochondria
Intermittent fasting may provide brain protection through improving mitochondrial function, metabolism and reducing oxidants.
Mitochondria’s main role is to produce energy and they are crucial to brain health. Many age-related diseases are closely related to an energy supply and demand imbalance, likely attributed to mitochondrial dysfunction during ageing.
Rodent studies suggest alternate day fasting or reducing calories by up to 40% might protect or improve brain mitochondrial function. But not all studies support this theory.
4. The gut-brain axis
The gut and the brain communicate with each other via the body’s nervous systems. The brain can influence how the gut feels (think about how you get “butterflies” in your tummy when nervous) and the gut can affect mood, cognition and mental health.
In mice, intermittent fasting has shown promise for improving brain health by increasing survival and formation of neurons (nerve cells) in the hippocampus brain region, which is involved in memory, learning and emotion.
There’s no clear evidence on the effects of intermittent fasting on cognition in healthy adults. However one 2022 study interviewed 411 older adults and found lower meal frequency (less than three meals a day) was associated with reduced evidence of Alzheimer’s disease on brain imaging.
Some research has suggested calorie restriction may have a protective effect against Alzheimer’s disease by reducing oxidative stress and inflammation and promoting vascular health.
When we look at the effects of overall energy restriction (rather than intermittent fasting specifically) the evidence is mixed. Among people with mild cognitive impairment, one study showed cognitive improvement when participants followed a calorie restricted diet for 12 months.
Another study found a 25% calorie restriction was associated with slightly improved working memory in healthy adults. But a recent study, which looked at the impact of calorie restriction on spatial working memory, found no significant effect.
Bottom line
Studies in mice support a role for intermittent fasting in improving brain health and ageing, but few studies in humans exist, and the evidence we have is mixed.
Rapid weight loss associated with calorie restriction and intermittent fasting can lead to nutrient deficiencies, muscle loss, and decreased immune function, particularly in older adults whose nutritional needs may be higher.
Further, prolonged fasting or severe calorie restriction may pose risks such as fatigue, dizziness, and electrolyte imbalances, which could exacerbate existing health conditions.
If you’re considering intermittent fasting, it’s best to seek advice from a health professional such as a dietitian who can provide guidance on structuring fasting periods, meal timing, and nutrient intake. This ensures intermittent fasting is approached in a safe, sustainable way, tailored to individual needs and goals.
Hayley O’Neill, Assistant Professor, Faculty of Health Sciences and Medicine, Bond University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Managing Major Chronic Diseases – by Alexis Dupree
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Our author, Alexis Dupree, is herself in her 70s, and writing with more than three decades of experience of surviving multiple chronic diseases (in her case, Multiple Sclerosis, and then a dozen comorbidities that came with such).
She is not a doctor or a scientist, but for more than 30 years she’s been actively working to accumulate knowledge not just on her own conditions, but on the whole medical system, and what it means to be a “forever patient” without giving up hope.
She talks lived-experience “life management” strategies for living with chronic disease, and she talks—again from lived experience—about navigating the complexities of medical care; not on a legalistic “State regulations say…” level, because that kind of thing changes by the minute, but on a human level.
Perhaps most practically: how to advocate strongly for yourself while still treating medical professionals with the respect and frankly compassion that they deserve while doing their best in turn.
But also: how to change your attitude to that of a survivor, and yet also redefine your dreams. How to make a new game plan of life—while working to make life easier for yourself. How to deal, psychologically, with the likelihood that not only will you probably not get better, but also, you will probably get worse, while still never, ever, giving up.
After all, many things are easily treatable today that mere decades ago were death sentences, and science is progressing all the time. We just have to stay alive, and in as good a condition as we reasonably can, to benefit from those advances!
Bottom line: if you have a chronic disease, or if a loved one does, then this is an immensely valuable book to read.
Click here to check out Managing Major Chronic Diseases, and make life easier!
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Figs vs Plums – Which is Healthier?
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Our Verdict
When comparing figs to plums, we picked the figs.
Why?
In terms of macros, figs have more protein, carbs, and fiber; the glycemic index is about equal so we’ll call this category either a tie, or a nominal win for figs (as the “more food per food” option).
In the category of vitamins, figs have more of vitamins B1, B2, B3, B5, B6, B7, B9, and choline, while plums have more of vitamins A, C, E, and K. We may subjectively prefer one set of vitamins or the other (depending on the rest of our diet, for example), but by the numbers, this is a 7:4 victory for figs.
When it comes to minerals, figs have more calcium, copper, iron, magnesium, manganese, phosphorus, potassium, selenium, and zinc, while plums are not higher in any minerals. An easy win for figs here.
Of course, enjoy either or both, but if you’re going to pick one for nutritional density, we say it’s figs, as illustrated scientifically below:
Want to learn more?
You might like to read:
Which Sugars Are Healthier, And Which Are Just The Same?
Take care!
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