
Non-Sleep Deep Rest: A Neurobiologist’s Take
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 get many benefits of sleep, while awake!
Today we’re talking about Dr. Andrew Huberman, a neuroscientist and professor in the department of neurobiology at Stanford School of Medicine.
He’s also a popular podcaster, and as his Wikipedia page notes:
❝In episodes lasting several hours, Huberman talks about the state of research in a specific topic, both within and outside his specialty❞
Today, we won’t be taking hours, and we will be taking notes from within his field of specialty (neurobiology). Specifically, in this case:
Non-Sleep Deep Rest (NSDR)
What is it? To quote from his own dedicated site on the topic:
❝What is NSDR (Yoga Nidra)? Non-Sleep Deep Rest, also known as NSDR, is a method of deep relaxation developed by Dr. Andrew Huberman, a neuroscientist at Stanford University School of Medicine.
It’s a process that combines controlled breathing and detailed body scanning to bring you into a state of heightened awareness and profound relaxation. The main purpose of NSDR is to reduce stress, enhance focus, and improve overall well-being.❞
While it seems a bit bold of Dr. Huberman to claim that he developed yoga nidra, it is nevertheless reassuring to get a neurobiologist’s view on this:
How it works, by science
Dr. Huberman says that by monitoring EEG readings during NSDR, we can see how the brain slows down. Measurably!
- It goes from an active beta range of 13–30 Hz (normal waking) to a conscious meditation state of an alpha range of 8–13 Hz.
- However, with practice, it can drop further, into a theta range of 4–8 Hz.
- Ultimately, sustained SSDR practice can get us to 0.5–3 Hz.
This means that the brain is functioning in the delta range, something that typically only occurs during our deepest sleep.
You may be wondering: why is delta lower than theta? That’s not how I remember the Greek alphabet being ordered!
Indeed, while the Greek alphabet goes alpha beta gamma delta epsilon zeta eta theta (and so on), the brainwave frequency bands are:
- Gamma = concentrated focus, >30 Hz
- Beta = normal waking, 13–30 Hz
- Alpha = relaxed state, 8–13 Hz
- Theta = light sleep, 4–8 Hz
- Delta = deep sleep, 1–4 Hz
Source: Sleep Foundation ← with a nice infographic there too
NSDR uses somatic cues to engage our parasympathetic nervous system, which in turn enables us to reach those states. The steps are simple:
- Pick a time and place when you won’t be disturbed
- Lie on your back and make yourself comfortable
- Close your eyes as soon as you wish, and now that you’ve closed them, imagine closing them again. And again.
- Slowly bring your attention to each part of your body in turn, from head to toe. As your attention goes to each part, allow it to relax more.
- If you wish, you can repeat this process for another wave, or even a third.
- Find yourself well-rested!
Note: this engagement of the parasympathetic nervous system and slowing down of brain activity accesses restorative states not normally available while waking, but 10 minutes of NSDR will not replace 7–9 hours of sleep; nor will it give you the vital benefits of REM sleep specifically.
So: it’s an adjunct, not a replacement
Want to try it, but not sure where/how to start?
When you’re ready, let Dr. Huberman himself guide you through it in this shortish (10:49) soundtrack:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to try it, but not right now? Bookmark it for later
Take care!
Don’t Forget…
Did you arrive here from our newsletter? Don’t forget to return to the email to continue learning!
Recommended
Learn to Age Gracefully
Join the 98k+ American women taking control of their health & aging with our 100% free (and fun!) daily emails:
-
Screaming at Screens?
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.
I Screen, You Screen, We All Screen For…?
Dr. Kathryn Birkenbach is a postdoctoral research fellow in the Department of Neuroscience at Columbia University, and Manager of Research at Early Medical in New York.
Kathryn has things to tell us about kids’ neurological development, and screen time spent with electronic devices including phones, tablets, computers, and TVs.
From the 1960s criticism of “the gogglebox” to the modern-day critiques of “iPad babies” as a watchword of parental neglect, there’s plenty people can say against screen time, but Dr. Birkenbach tells us the that the reality is more nuanced:
Context Is Key
On a positive note”: consistent exposure to age-appropriate educational material results in quicker language acquisition than media that’s purely for entertainment purposes, or not age-appropriate.
Contrary to popular belief, children do not in fact learn by osmosis!
Interaction Is Far More Valuable Than Inaction
Kathryn advises that while adults tend to quite easily grasp things from instructional videos, the same does not go for small children.
This means that a lot of educational programming can be beneficial to small children if and only if there is an adult with them to help translate the visual into the practical!
There’s a story that does the rounds on the Internet: a young boy wanted to train his puppy, but didn’t know how. He asked, and was told “search for puppy training on YouTube”. His parents came back later and found him with his iPad, earnestly showing the training videos to the puppy.
We can laugh at the child’s naïvety, knowing that’s not how it works and the puppy will not learn that way, so why make the same mistake in turn?
❝The phenomenon known as the “video deficit effect” can be overcome, when an on-screen guide interacts with the child or a parent is physically present and draws the child’s attention to relevant information.
In other words, interaction with others appears to enhance the perceived salience of on-screen information, unlocking a child’s ability to learn from a medium which would otherwise offer no real-world benefit.❞
Screens Can Supplement, But Can’t Replace, Live Learning & Play
Sci-fi may show us “education pods” in which children learn all they need to from their screen… but according to our most up-to-date science, Dr. Birkenbach says, that simply would not work at all.
Screen time without adult interactions will typically fail to provide small children any benefit.
There is one thing it’s good at, though… attracting and keeping attention.
Thus, even a mere background presence of a TV show in the room will tend to actively reduce the time a small child spends on other activities, including live learning and exploratory play.
The attention-grabbing abilities of TV shows don’t stop at children, though! Adult caregivers will also tend to engage in fewer interactions with their children… and the interactions will be shorter and of lower quality.
In Summary:
- Young children will tend not to learn from non-interactive screen time
- Interactive screen time, ideally with a caregiver, can be educational
- Interactive screen time, not with a carer, can be beneficial (but a weak substitute)
- Interactive screen time refers to shows such as Dora The Explorer, where Dora directly addresses the viewer and asks questions…But it’s reliant on the child caring to answer!
- It can also mean interactive educational apps, provided the child does consciously interact!
- Randomly pressing things is not conscious interaction! The key here is engaging with it intelligently and thoughtfully
- A screen will take a child’s time and attention away from non-screen things: that’s a genuine measurable loss to their development!
Absolute Bottom Line:
Screens can be of benefit to small children, if and only if the material is:
- Age-Appropriate
- Educational
- Interactive
If it’s missing one of those three, it’ll be of little to no benefit, and can even harm, as it reduces the time spent on more beneficial activities.
Share This Post
-
6 Lifestyle Factors To Measurably Reduce Biological Age
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.
Julie Gibson Clark competes on a global leaderboard of people actively fighting aging (including billionaire Bryan Johnson, who is famously very focused on such). She’s currently ahead of him on that leaderboard, so what’s she doing?
Top tips
We’ll not keep the six factors a mystery; they are:
- Exercise: her weekly exercise includes VO2 Max training, strength training, balance work, and low-intensity cardio. She exercises outdoors on Saturdays and takes rest days on Fridays and Sundays.
- Diet: she follows a 16-hour intermittent fasting schedule (eating between 09:00–17:00), consumes a clean omnivore diet with an emphasis on vegetables and adequate protein, and avoids junk food.
- Brain: she meditates for 20 minutes daily, prioritizes mental health, and ensures sufficient quality sleep, helped by morning sunlight exposure and time in nature.
- Hormesis: she engages in 20-minute sauna sessions followed by cold showers four times per week to support recovery and longevity.
- Supplements: she takes longevity supplements and bioidentical hormones to optimize her health and aging process.
- Testing: she regularly monitors her biological age and health markers through various tests, including DEXA scans, VO2 Max tests, lipid panels, and epigenetic aging clocks, allowing her to adjust her routine accordingly.
For more on all of these, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
Age & Aging: What Can (And Can’t) We Do About It?
Take care!
Share This Post
-
Top 8 Fruits That Prevent & Kill Cancer
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.
Dr. Amy Dee, pharmacist and cancer survivor herself, lays out the best options for anticancer fruits:
The fruits
Without further ado, they are:
- Kiwi: promotes cancer cell death while sparing healthy cells
- Plums & peaches: an interesting choice to list these similar fruits together as one item, but they both also induce cell death in cancer cells while sparing healthy ones
- Dragon fruit: this does the same, while also inhibiting cancer cell growth
- Figs: these have antitumor effects specifically, while removing carcinogens too, and additionally sensitizing cancer cells to light therapy
- Cranberries: disrupt cancer cell adhesion, breaking down tumors, while protecting non-cancerous cells against DNA damage
- Citrus fruits: inhibit tumor growth and kill cancer cells; regular consumption is also associated with a lower cancer risk (be warned though, grapefruit interacts with some medications)
- Cherries: induce cancer cell death; protect healthy cells against DNA damage
- Tomatoes: don’t often make it into lists of fruits, but lycopene reduces cancer risk, and slows the growth of cancer cells (10almonds note: watermelon has more lycopene than tomatoes, and is more traditionally considered a fruit in all respects, so could have taken the spot here).
We would also argue that apricots could have had a spot on the list, both for their lycopene content (comparable to tomatoes) and their botanical (and thus phytochemical) similarities to peaches and plums.
For more information on each of these (she also talks about the different polyphenols and other nutrients that constitute the active compounds delivering these anticancer effects), enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
- Food Choice & Cancer Risk: Eat To Beat Cancer
- Beat Cancer Kitchen: Deliciously Simple Plant-Based Anticancer Recipes (book)
Take care!
Share This Post
Related Posts
-
The Menopause Manifesto – by Dr. Jen Gunter
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.
From the subtitle, you may wonder: with facts and feminism? Is this book about biology or sociology?
And the answer is: both. It’s about biology, principally, but without ignoring the context. We do indeed “live in a society”, and that affects everything from our healthcare options to what is expected of us as women.
So, as a warning: if you dislike science and/or feminism, you won’t like this book.
Dr. Jen Gunter, herself a gynaecologist, is here to arm us with science-based facts, to demystify an important part of life that is commonly glossed over.
She talks first about the what/why/when/how of menopause, and then delivers practical advice. She also talks about the many things we can (and can’t!) usefully do about symptoms we might not want, and how to look after our health overall in the context of menopause. We learn what natural remedies do or don’t work and/or can be actively harmful, and we learn the ins and outs of different hormone therapy options too.
Bottom line: no matter whether you are pre-, peri-, or post-menopausal, this is the no-BS guide you’ve been looking for. Same goes if you’re none of the above but spend any amount of time close to someone who is.
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
Join the 98k+ American women taking control of their health & aging with our 100% free (and fun!) daily emails:
-
Holding Back The Clock on Aging
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.
Holding Back The Clock on Aging
This is Dr. Eric Verdin, President and CEO of the Buck Institute of Research on Aging. He’s also held faculty positions at the University of Brussels, the NIH, and the Picower Institute for Medical Research. Dr. Verdin is also a professor of medicine at University of California, San Francisco.
Dr. Verdin’s laboratory focuses on the role of epigenetic regulators (especially the behaviors of certain enzymes) in the aging process. He studies how metabolism, diet, and chemical factors regulate the aging process and its associated diseases, including Alzheimer’s.
He has published more than 210 scientific papers and holds more than 15 patents. He is a highly cited scientist and has been recognized for his research with a Glenn Award for Research in Biological Mechanisms of Aging.
And that’s just what we could fit here! Basically, he knows his stuff.
What we can do
Dr. Verdin’s position is bold, but rooted in evidence:
❝Lifestyle is responsible for about 93% of our longevity—only about 7% is genetics. Based on the data, if implementing health lifestyle choices, most people could live to 95 in good health. So there’s 15 to 17 extra years of healthy life that is up for grabs❞
~ Dr. Eric Verdin
See for example:
- From discoveries in aging research to therapeutics for healthy aging
- Optimism, lifestyle, and longevity in a racially diverse cohort of women
- Well-being, food habits, and lifestyle for longevity—evidence from supercentenarians
How we can do it
Well, we all know “the big five”:
- Good diet (Mediterranean Diet as usual is recommended)
- Good exercise (more on this in a moment)
- Good sleep (more on this in a moment)
- Avoid alcohol (not controversial)
- Don’t smoke (need we say more)
When it comes to exercise, generally recognized as good is at least 150 minutes per week of moderate intensity exercise (for example, a brisk walk, or doing the gardening), and at least three small sessions a week of high intensity exercise, unless contraindicated by some medical condition.
As for Dr. Verdin’s take on this…
What Dr. Verdin recommends is:
- make it personalized
- make it pre-emptive
- make it better
The perfect exercise plan is only perfect if you actually do it. And if you actually can do it, for that matter.
Prevention is so much better (and easier) than cure for a whole array of maladies. So while there may be merit in thinking “what needs fixing”, Dr. Verdin encourages us to take extra care to not neglect factors of our health that seem “good enough”. Because, give them time and neglect, and they won’t be!
Wherever we’re at in life and health, there’s always at least some little way we could make it a bit better. Dr. Verdin advises us to seek out those little improvements, even if it’s just a nudge better here, a nudge better there, all those nudges add up!
About sleep…
It’s perhaps the easiest one to neglect (writer’s note: as a writer, I certainly feel that way!), but his biggest take-away tip for this is:
Worry less about what time you set an alarm for in the morning. Instead, set an alarm for the evening—to remind you when to go to bed.
Want to hear directly from the man himself?
Here he is speaking on progress we can expect for the next decade in the field of aging research, as part of the 100 Minutes of Longevity session at The Longevity Forum, a few months ago:
! 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
Join the 98k+ American women taking control of their health & aging with our 100% free (and fun!) daily emails:
-
What Loneliness Does To Your Brain And Body
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.
Spoiler: it’s nothing good (but it can be addressed!)
Not something to be ignored
Loneliness raises the risk of heart disease by 29% and the risk of stroke by 32%. It also brings about higher susceptibility to illness (flu, COVID, chronic pain, etc), as well as poor sleep quality and cognitive decline, possibly leading to dementia. Not only that, but it also promotes inflammation, and premature death (comparable to smoking).
This is because the lack of meaningful social connections activates the body’s stress response, which in turn increases paranoia, suspicion, and social withdrawal—which makes it harder to seek the social interaction needed to alleviate it.
On a neurological level, cortisol levels become imbalanced, and a faltering dopamine response leads to impulsive behaviors (e.g., drinking, gambling) to try to make up for it. Decreased serotonin, oxytocin, and natural opioids reduce feelings of happiness and negate pain relief.
As for combatting it, the first-line remedy is the obvious one: connecting with others improves emotional and physical wellbeing. However, it is recommended to aim for deep, meaningful connections that make you happy rather than just socializing for its own sake. It’s perfectly possible to be lonely in a crowd, after all.
A second-line remedy is to simply mitigate the harm by means of such things as art therapy and time in nature—they can’t completely replace human connection, but they can at least improve the neurophysiological situation (which in turn, might be enough of a stop-gap solution to enable a return to human connection).
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!
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
Join the 98k+ American women taking control of their health & aging with our 100% free (and fun!) daily emails: