Somatic Exercises For Nervous System Regulation – by Rose Kilian
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We’ve written before about the vagus nerve, its importance, and how to make use of it, but it’s easy to let it slip from one’s mind when it comes to exercises. This book fixes that!
The promised 35 exercises are quite a range, and are organized into sections:
- Revitalizing through breath
- Stress and tension release
- Spinal and postural health
- Mindfulness and grounding
- Movements for flexibility
- Graceful balance and focus
While it’s not necessary to do all 35 exercises, it’s recommended to do at least some from each section, to “cover one’s bases”, and enjoy the best of all worlds.
The exercises are drawn from many sources, but tai chi and yoga are certainly the most well-represented. Others, meanwhile, are straight from physiotherapy or are things one might expect to be advised at a neurology consultation.
Bottom line: if you’d like to take better care of your vagus nerve, the better for it to take care of you, this book can certainly help with that.
Click here to check out Somatic Exercises For Nervous System Regulation, and take care of yourself!
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How we treat catchment water to make it safe to drink
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Most of us are fortunate that, when we turn on the tap, clean, safe and high-quality water comes out.
But a senate inquiry into the presence of PFAS or “forever chemicals” is putting the safety of our drinking water back in the spotlight.
Lidia Thorpe, the independent senator leading the inquiry, says Elders in the Aboriginal community of Wreck Bay in New South Wales are “buying bottled water out of their aged care packages” due to concerns about the health impacts of PFAS in their drinking water.
So, how is water deemed safe to drink in Australia? And why does water quality differ in some areas?
Here’s what happens between a water catchment and your tap.
Andriana Syvanych/Shutterstock Human intervention in the water cycle
There is no “new” water on Earth. The water we drink can be up to 4.5 billion years old and is continuously recycled through the hydrological cycle. This transfers water from the ground to the atmosphere through evaporation and back again (for example, through rain).
Humans interfere with this natural cycle by trapping and redirecting water from various sources to use. A lot happens before it reaches your home.
The quality of the water when you turn on the tap depends on a range of factors, including the local geology, what kind of activities happen in catchment areas, and the different treatments used to process it.
Maroondah dam in Healesville, Victoria. doublelee/Shutterstock How do we decide what’s safe?
The Australian Drinking Water Guidelines define what is considered safe, good-quality drinking water.
The guidelines set acceptable water quality values for more than 250 physical, chemical and bacterial contaminants. They take into account any potential health impact of drinking the contaminant over a lifetime as well as aesthetics – the taste and colour of the water.
The guidelines are not mandatory but provide the basis for determining if the quality of water to be supplied to consumers in all parts of Australia is safe to drink. The guidelines undergo rolling revision to ensure they represent the latest scientific evidence.
From water catchment to tap
Australians’ drinking water mainly comes from natural catchments. Sources include surface water, groundwater and seawater (via desalination).
Public access to these areas is typically limited to preserve optimal water quality.
Filtration and purification of water occurs naturally in catchments as it passes through soil, sediments, rocks and vegetation.
But catchment water is subject to further treatment via standard processes that typically focus on:
- removing particulates (for example, soil and sediment)
- filtration (to remove particles and their contaminants)
- disinfection (for example, using chlorine and chloramine to kill bacteria and viruses)
- adding fluoride to prevent tooth decay
- adjusting pH to balance the chemistry of the water and to aid filtration.
This water is delivered to our taps via a reticulated system – a network of underground reservoirs, pipes, pumps and fittings.
In areas where there is no reticulated system, drinking water can also be sourced from rainwater tanks. This means the quality of drinking water can vary.
Sources of contamination can come from roof catchments feeding rainwater tanks as well from the tap due to lead in plumbing fittings and materials.
So, does all water meet these standards?
Some rural and remote areas, especially First Nations communities, rely on poor-quality surface water and groundwater for their drinking water.
Rural and regional water can exceed recommended guidelines for salt, microbial contaminants and trace elements, such as lead, manganese and arsenic.
The federal government and other agencies are trying to address this.
There are many impacts of poor regional water quality. These include its implication in elevated rates of tooth decay in First Nations people. This occurs when access to chilled, sugary drinks is cheaper and easier than access to good quality water.
What about PFAS?
There is also renewed concern about the presence of PFAS or “forever” chemicals in drinking water.
Recent research examining the toxicity of PFAS chemicals along with their presence in some drinking water catchments in Australia and overseas has prompted a recent assessment of water source contamination.
A review by the National Health and Medical Research Council (NHMRC) proposed lowering the limits for four PFAS chemicals in drinking water: PFOA, PFOS, PFHxS and PFBS.
The review used publicly available data and found most drinking water supplies are currently below the proposed new guideline values for PFAS.
However, “hotspots” of PFAS remain where drinking water catchments or other sources (for example, groundwater) have been impacted by activities where PFAS has been used in industrial applications. And some communities have voiced concerns about an association between elevated PFAS levels in their communities and cancer clusters.
While some PFAS has been identified as carcinogenic, it’s not certain that PFAS causes cancer. The link is still being debated.
Importantly, assessment of exposure levels from all sources in the population shows PFAS levels are falling meaning any exposure risk has also reduced over time.
How about removing PFAS from water?
Most sources of drinking water are not associated with industrial contaminants like PFAS. So water sources are generally not subject to expensive treatment processes, like reverse osmosis, that can remove most waterborne pollutants, including PFAS. These treatments are energy-intensive and expensive and based on recent water quality assessments by the NHMRC will not be needed.
While contaminants are everywhere, it is the dose that makes the poison. Ultra-low concentrations of chemicals including PFAS, while not desirable, may not be harmful and total removal is not warranted.
Mark Patrick Taylor, Chief Environmental Scientist, EPA Victoria; Honorary Professor, School of Natural Sciences, Macquarie University; Antti Mikkonen, Principal Health Risk Advisor – Chemicals, EPA Victoria, and PhD graduate, School of Pharmacy and Medical Sciences, University of South Australia, and Minna Saaristo, Research Affiliate in the School of Biological Sciences, Monash University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Curing Hiccups And Headaches At Home With Actual Science
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Quick fixes for bodily annoyances
Do you ever find yourself desperately trying to cure hiccups, and advice on the Internet is like “breathe in through your ears while drinking vinegar upside-down through your nose”?
If so, you’re not alone. So, today we’re going to look at some science-based approaches to dealing with common bodily annoyances.
Hiccups
Unfortunately, most popular advices simply don’t work, and the only near-guaranteed way to cure these is with anti-convulsive medications whose side-effects may be worse than the hiccups.
However, before you head to the pharmacy, there is one breathing exercise that has a very simple scientific underpinning: 4:4 breathing. If you’re unfamiliar, it’s just:
- Breathe slowly in through your nose to a count of four
- Hold your breath for a count of four
- Breathe slowly out through your nose to a count of four
- Hold your breath for a count of four
…and repeat. The slower the better. At first, your hiccups will interrupt this, but just “keep calm and carry on”.
The reason this can work is that breathing is an autonomic function (e.g., it happens without us thinking about it) that, unlike most other autonomic functions, we can all control directly. By taking control of one, others will tend to fall into line with it.
For example, it is normal that your heart rate will tend to slow or quicken as your breathing slows or quickens, respectively.
Your hiccups? Autonomic function. Actually a very, very old evolutionary left-over trait, that’s only useful for protecting lungs while breathing underwater. In other words, it’s the bodily function thinks you’re a fish (or a tadpole-like amphibious creature) in the process of developing lungs. Unfortunately, because hiccuping doesn’t harm our chances of passing on our genes, it never got naturally de-selected so we still have it.
Anyway, the bottom line is: take control of your breathing in the aspects you can directly control, and the aspects you can’t directly control will fall into line. You may need to give it some minutes, don’t give up too quickly.
Headaches
If you ever get a headache and you don’t have painkillers or perhaps they’re not helping or you have another reason for not wanting to take them, there’s “one quick trick” that can cure most headaches in seconds.
First, the limitation: this will only cure headaches that have been caused by increased localized blood pressure in the forehead. However, that’s more than half of most common headaches.
Next, how it works…
We’re mentioning this first, because understanding how it works will give you more confidence in using it.
Your body has a wonderful homeostatic system, which is the system by which your body maintains its “Goldilocks zones” of not too hot or cold, not to acidine or alkaline, not too hydrated or dehydrated, blood pressure not too high or too low, etc. Sometimes, however, it can get confused, and needs a nudge back to where it should be.
One of the ways it maintains blood pressure is biofeedback from receptors in blood vessel walls, called baroreceptors. They are what it sounds like; they measure blood pressure internally.
In certain places, there are clusters of baroreceptors in one place. And if we press on that one place, the body will think “Oh no! Super high blood pressure in this bit!” and reduce the blood pressure immediately.
This is called the baroreflex, and that’s what you need to cure a hypertensive headache.
So, what to do:
With your thumb, carefully feel the upper inside corner of your eye socket. So, at the top, and about ¼ of the way out from the bridge of your nose. You should feel a groove. No, not like the Emperor’s New, but, an actual groove in your eye socket. That’s the supraorbital notch (or foramen), and it allows the supraorbital artery, veins, and nerve to run through.
Press it firmly (you can do both sides at once, assuming you have two thumbs) for about three seconds, and then massage it gently. Repeat as necessary, but it shouldn’t take more than about three goes to have cured the headache.
As a bonus, this is a great party trick for curing other people’s headaches, when the need arises!
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Buckwheat vs Oats – Which is Healthier?
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Our Verdict
When comparing buckwheat to oats, we picked the oats.
Why?
First of all, for any thinking about the health concerns sometimes associated with wheat: buckwheat is not a kind of wheat, nor is it even in the same family; it’s not a grain, but a flowering plant. Buckwheat is to wheat as a lionfish is to lions.
That said, while these are both excellent foods, one of them is so good it makes the other one look bad in comparison:
In terms of macros, oats have more carbs, but also more protein and more fiber.
When it comes to vitamins, a clear winner emerges: oats have more of vitamins B1, B2, B5, B6, and B9, while buckwheat is higher in vitamin K and choline.
In the category of minerals, things are even more pronounced: oats are higher in calcium, iron, magnesium, manganese, phosphorus, potassium, and zinc. On the other hand, buckwheat is higher in selenium.
All in all: as ever, enjoy both, but if you’re picking one, oats cannot be beaten.
Want to learn more?
You might like to read:
The Best Kind Of Fiber For Overall Health?
Take care!
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Treadmill vs Road
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Have a question or a request? We love to hear from you!
In cases where we’ve already covered something, we might link to what we wrote before, but will always be happy to revisit any of our topics again in the future too—there’s always more to say!
As ever: if the question/request can be answered briefly, we’ll do it here in our Q&A Thursday edition. If not, we’ll make a main feature of it shortly afterwards!
So, no question/request too big or small 😎
❝Why do I get tired much more quickly running outside, than I do on the treadmill? Every time I get worn out quickly but at home I can go for much longer!❞
Short answer: the reason is Newton’s laws of motion.
In other words: on a treadmill, you need only maintain your position in space relative the the Earth while the treadmill moves beneath you, whereas on the road, you need to push against the Earth with sufficient force to move it relative to your body.
Illustrative thought experiment to make that clearer: if you were to stand on a treadmill with roller skates, and hold onto the bar with even just one finger, you would maintain your speed as far as the treadmill’s computer is concerned—whereas to maintain your speed on a flat road, you’d still need to push with your back foot every few yards or so.
More interesting answer: it’s a qualitatively different exercise (i.e. not just quantitively different). This is because of all that pushing you’re having to do on the road, while on a treadmill, the only pushing you have to do is just enough to counteract gravity (i.e. to keep you upright).
As such, both forms of running are a cardio exercise (because simply moving your legs quickly, even without having to apply much force, is still something that requires oxygenated blood feeding the muscles), but road-running adds an extra element of resistance exercise for the muscles of your lower body. Thus, road-running will enable you to build-maintain muscle much more than treadmill-running will.
Some extra things to bear in mind, however:
1) You can increase the resistance work for either form of running, by adding weight (such as by wearing a weight vest):
Weight Vests Against Osteoporosis: Do They Really Build Bone?
…and while road-running will still be the superior form of resistance work (for the reasons we outlined above), adding a weight vest will still be improving your stabilization muscles, just as it would if you were standing still while holding the weight up.
2) Stationary cycling does not have the same physics differences as stationary running. By this we mean: an exercise bike will require your muscles to do just as much pushing as they would on a road. This makes stationary cycling an excellent choice for high intensity resistance training (HIRT):
3) The best form of exercise is the one that you will actually do. Thus, when it’s raining sidewise outside, a treadmill inside will get exercise done better than no running at all. Similarly, a treadmill exercise session takes a lot less preparation (“switch it on”) than a running session outside (“get dressed appropriately for the weather, apply sunscreen if necessary, remember to bring water, etc etc”), and thus is also much more likely to actually occur. The ability to stop whenever one wants is also a reassuring factor that makes one much more likely to start. See for example:
How To Do HIIT (Without Wrecking Your Body)
Take care!
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Alzheimer’s Causative Factors To Avoid
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The Best Brains Bar Nun?
This is Dr. David Snowdon. He’s an epidemiologist, and one of the world’s foremost experts on Alzheimer’s disease. He was also, most famously, the lead researcher of what has become known as “The Nun Study”.
We recently reviewed his book about this study:
…which we definitely encourage you to check out, but we’ll do our best to summarize its key points today!
Reassurance up-front: no, you don’t have to become a nun
The Nun Study
In 1991, a large number (678) of nuns were recruited for what was to be (and until now, remains) the largest study of its kind into the impact of a wide variety of factors on aging, and in particular, Alzheimer’s disease.
Why it was so important: because the nuns were all from the same Order, had the same occupation (it’s a teaching Order), with very similar lifestyles, schedules, socioeconomic status, general background, access to healthcare, similar diets, same relationship status (celibate), same sex (female), and many other factors also similar, this meant that most of the confounding variables that confound other studies were already controlled-for here.
Enrollment in the study also required consenting to donating one’s brain for study post-mortem—and of those who have since died, indeed 98% of them have been donated (the other 2%, we presume, may have run into technical administrative issues with the donation process, due to the circumstances of death and/or delays in processing the donation).
How the study was undertaken
We don’t have enough space to describe the entire methodology here, but the gist of it is:
- Genetic testing for relevant genetic factors
- Data gathered about lives so far, including not just medical records but also autobiographies that the nuns wrote when they took their vows (at ages 19–21)
- Extensive ongoing personal interviews about habits, life choices, and attitudes
- Yearly evaluations including memory tests and physical function tests
- Brain donation upon death
What they found
Technically, The Nun Study is still ongoing. Of the original 678 nuns (aged 75–106), three are still alive (based on the latest report, at least).
However, lots of results have already been gained, including…
Genes
A year into the study, in 1992, the “apolipoprotein E” (APOE) gene was established as a likely causative factor in Alzheimer’s disease. This is probably not new to our readers in 2024, but there are interesting things being learned even now, for example:
The Alzheimer’s Gene That Varies By Race & Sex
…but watch out! Because also:
Alzheimer’s Sex Differences May Not Be What They Appear
Words
Based on the autobiographies written by the nuns in their youth upon taking their vows, there were two factors that were later correlated with not getting dementia:
- Longer sentences
- Positive outlook
- “Idea density”
That latter item means the relative linguistic density of ideas and complexity thereof, and the fluency and vivacity with which they were expressed (this was not a wishy-washy assessment; there was a hard-science analysis to determine numbers).
Want to spruce up yours? You might like to check out:
Reading, Better: Reading As A Cognitive Exercise
…for specific, evidence-based ways to tweak your reading to fight cognitive decline.
Food
While the dietary habits of the nuns were fairly homogenous, those who favored eating more and cooked greens, beans, and tomatoes, lived longer and with healthier brains.
See also: Brain Food? The Eyes Have It!
Other aspects of brain health & mental health
The study also found that nuns who avoided stroke and depression, were also less likely to get dementia.
For tending to these, check out:
- Two Things You Can Do To Improve Stroke Survival Chances
- Depression, And The Mental Health First-Aid That You’ll Hopefully Never Need
- Behavioral Activation Against Depression & Anxiety
Community & Faith
Obviously, in this matter the nuns were quite a homogenous group, scoring heavily in community and faith. What’s relevant here is the difference between the nuns, and other epidemiological studies in other groups (invariably not scoring so highly).
Community & faith are considered, separately and together, to be protective factors against dementia.
Faith may be something that “you have it or you don’t” (we’re a health science newsletter, not a theological publication, but for the interested, philosopher John Stuart Mill’s 1859 essay “On Liberty“ makes a good argument for it not being something one can choose, prompting him to argue for religious tolerance, on the grounds that religious coercion is a futile effort precisely because a person cannot choose to dis/believe something)
…but community can definitely be chosen, nurtured, and grown. We’ve written about this a bit before:
You might also like to check out this great book on the topic:
Purpose: Design A Community And Change Your Life – by Gina Bianchini
Want more?
We gave a ground-up primer on avoiding Alzheimer’s and other dementias; check it out:
How To Reduce Your Alzheimer’s Risk
Take care!
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How to Fall Asleep Faster: CBT-Insomnia Treatment
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Insomnia affects a lot of people, and is even more common as we get older. Happily, therapist Emma McAdam is here with a drug-free solution that will work for most people most of the time.
Cognitive Behavioral Therapy for Insomnia (CBTI)
While people think of causes of insomnia as being things such as stress, anxiety, overthinking, disturbances, and so forth, these things affect sleep in the short term, but don’t directly cause chronic insomnia.
We say “directly”, because chronic insomnia is usually the result of the brain becoming accustomed to the above, and thus accidentally training itself to not sleep.
The remedy: cut the bad habit of staying in bed while awake. Lying in bed awake trains the brain to associate lying in bed with wakefulness (and any associated worrying, etc). In essence, we lie down, and the brain thinks “Aha, we know this one; this is the time and place for worrying, ok, let’s get to work”.
So instead: if you’re in bed and not asleep within 15 minutes, get up and do something non-stimulating until you feel sleepy, then return to bed. This may cause some short term tiredness, but it will usually correct the chronic insomnia within a week.
For more details, tips, and troubleshooting with regard to the above, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
How to Fall Back Asleep After Waking Up in the Middle of the Night
Take care!
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