Spark – by Dr. John Ratey
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We all know that exercise is good for mental health as well as physical. So, what’s so revolutionary about this “revolutionary new science of exercise and the brain”?
A lot of it has to do with the specific neuroscience of how exercise has not only a mood-boosting effect (endorphins) and neuroprotective effect (helping to guard against cognitive decline), but also promotes neuroplasticity… e.g., the creation and strengthening of neural pathways, as well as boosting the structure of the brain in some parts such as the cerebellum.
The book also covers not just “exercise has these benefits”, but also the “how this works” of all kinds of brain benefits, including:
- against Alzheimer’s
- mitigating ADHD
- managing menopause
- dealing with addiction
…and more. And once we understand how something works, we’re far more likely to be motivated to actually do the kinds of exercises that give the specific benefits we want/need. Which is very much the important part!
In short: this book will tell you what you need to know to get you doing the exercises you need to enjoy those benefits—very much worth it!
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Non-Sleep Deep Rest: A Neurobiologist’s Take
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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:
Want to try it, but not right now? Bookmark it for later
Take care!
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5 Things To Know About Passive Suicidal Ideation
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If you’ve ever wanted to go to sleep and never wake up, or have some accident/incident/illness take you with no action on your part, or a loved one has ever expressed such thoughts/feelings to you… Then this video is for you. Dr. Scott Eilers explains:
Tired of living
We’ll not keep them a mystery; here are the five things that Dr. Eilers wants us to know about passive suicidal ideation:
- What it is: a desire for something to end your life without taking active steps. While it may seem all too common, it’s not necessarily inevitable or unchangeable.
- What it means in terms of severity: it isn’t a clear indicator of how severe someone’s depression is. It doesn’t necessarily mean that the person’s depression is mild; it can be severe even without active suicidal thoughts, or indeed, suicidality at all.
- What it threatens: although passive suicidal ideation doesn’t usually involve active planning, it can still be dangerous. Over time, it can evolve into active suicidal ideation or lead to risky behaviors.
- What it isn’t: passive suicidal ideation is different from intrusive thoughts, which are unwanted, distressing thoughts about death. The former involves a desire for death, while the latter does not.
- What it doesn’t have to be: passive suicidal ideation is often a symptom of underlying depression or a mood disorder, which can be treated through therapy, medication, or a combination of both. Seeking treatment is crucial and can be life-changing.
For more on all of the above, here’s Dr. Eilers with his own words:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
- The Mental Health First Aid You’ll Hopefully Never Need ← about depression generally
- How To Stay Alive (When You Really Don’t Want To) ← about suicidality specifically
Take care!
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Plant-Based Healthy Cream Cheese
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Cream cheese is a delicious food, and having a plant-based diet isn’t a reason to miss out. Here we have a protein-forward nuts-based cream cheese that we’re sure you’ll love (unless you’re allergic to nuts, in which case, maybe skip this one).
You will need
- 1½ cups raw cashews, soaked in warm water and then drained
- ½ cup water
- ½ cup coconut cream
- Juice of ½ lemon
- 3 tbsp nutritional yeast
- ½ tsp onion powder
- ½ tsp garlic powder
- ½ tsp black pepper
- ½ tsp cayenne pepper
- ¼ tsp MSG, or ½ tsp low-sodium salt
- Optional: ⅓ cup fresh basil
Method
(we suggest you read everything at least once before doing anything)
1) Blend all of the ingredients until creamy.
2) Optional: leave on the countertop, covered, for 1–2 hours, if you want a more fermented (effectively: cheesy) taste.
3) Refrigerate, ideally overnight, before serving. Serving on bagels is a classic, but you can also enjoy with the Healthy Homemade Flatbreads we made yesterday
Enjoy!
Want to learn more?
For those interested in some of the science of what we have going on today:
- Pistachios vs Cashews – Which is Healthier? ← Pistachios actually won here, but cashews are also great and are better (from a culinary perspective) for making cream cheese
- Why You Should Diversify Your Nuts!
- Our Top 5 Spices: How Much Is Enough For Benefits?
Take care!
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The Exercises That Can Fix Sinus Problems (And More)
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Who nose what benefits you will gain today?
This is James Nestor, a science journalist and author. He’s written for many publications, including Scientific American, and written a number of books, most notably Breath: The New Science Of A Lost Art.
Today we’ll be looking at what he has to share about what has gone wrong with our breathing, what problems this causes, and how to fix it.
What has gone wrong?
When it comes to breathing, we humans are the pugs of the primate world. In a way, we have the opposite problem to the squashed-faced dogs, though. But, how and why?
When our ancestors learned first tenderize food, and later to cook it, this had two big effects:
- We could now get much more nutrition for much less hunting/gathering
- We now did not need to chew our food nearly so much
Getting much more nutrition for much less hunting/gathering is what allowed us to grow our brains so large—as a species, we have a singularly large brain-to-body size ratio.
Not needing to chew our food nearly so much, meanwhile, had even more effects… And these effects have become only more pronounced in recent decades with the rise of processed food making our food softer and softer.
It changed the shape of our jaw and cheekbones, just as the size of our brains taking up more space in our skull moved our breathing apparatus around. As a result, our nasal cavities are anatomically ridiculous, our sinuses are a crime against nature (not least of all because they drain backwards and get easily clogged), and our windpipes are very easily blocked and damaged due to the unique placement of our larynx; we’re the only species that has it there. It allowed us to develop speech, but at the cost of choking much more easily.
What problems does this cause?
Our (normal, to us) species-wide breathing problems have resulted in behavioral adaptations such as partial (or in some people’s cases, total or near-total) mouth-breathing. This in turn exacerbates the problems with our jaws and cheekbones, which in turn exacerbates the problems with our sinuses and nasal cavities in general.
Results include such very human-centric conditions as sleep apnea, as well as a tendency towards asthma, allergies, and autoimmune diseases. Improper breathing also brings about a rather sluggish metabolism for how many calories we consume.
How are we supposed to fix all that?!
First, close your mouth if you haven’t already, and breathe through your nose.
In and out.
Both are important, and unless you are engaging in peak exercise, both should be through your nose. If you’re not used to this, it may feel odd at first, but practice, and build up your breathing ability.
Six seconds in and six seconds out is a very good pace.
If you’re sitting doing a breathing exercise, also good is four seconds in, four seconds hold, four seconds out, four seconds hold, repeat.
But those frequent holds aren’t practical in general life, so: six seconds in, six seconds out.
Through your nose only.
This has benefits immediately, but there are other more long-term benefits from doing not just that, but also what has been called (by Nestor, amongst many others), “Mewing”, per the orthodontist, Dr. John Mew, who pioneered it.
How (and why) to “mew”:
Place your tongue against the roof of your mouth. It should be flat against the palate; you’re not touching it with the tip here; you’re creating a flat seal.
Note: if you were mouth-breathing, you will now be unable to breathe. So, important to make sure you can breathe adequately through your nose first.
This does two things:
- It obliges nose-breathing rather than mouth-breathing
- It creates a change in how the muscles of your face interact with the bones of your face
In a battle between muscle and bone, muscle will always win.
Aim to keep your tongue there as much as possible; make it your new best habit. If you’re not eating, talking, or otherwise using your tongue to do something, it should be flat against the roof of your mouth.
You don’t have to exert pressure; this isn’t an exercise regime. Think of it more as a postural exercise, just, inside your mouth.
Quick note: read the above line again, because it’s important. Doing it too hard could cause the opposite problems, and you don’t want that. You cannot rush this by doing it harder; it takes time and gentleness.
Why would we want to do that?
The result, over time, will tend to be much healthier breathing, better sinus health, freer airways, reduced or eliminated sleep apnea, and, as a bonus, what is generally considered a more attractive face in terms of bone structure. We’re talking more defined cheekbones, straighter teeth, and a better mouth position.
Want to learn more?
This is the “Mewing” technique that Nestor encourages us to try:
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The Brain Health Kitchen – by Dr. Annie Fenn
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This is a cookbook built around the MIND diet, which we talked about in our “Four Ways To Upgrade The Mediterranean Diet” article.
As such, it’s a top-tier gold-standard diet to be following for brain health, and having it as a book of recipes makes actually eating this way a lot easier!
The book does talk about the science first before getting to the recipes, so don’t worry, you won’t have to reverse engineer the dietary guidelines from the recipes; everything is explained well.
The recipes (of which there are 100) are diverse enough to be interesting without being so complicated as to be difficult. The ingredients are largely nutritional powerhouses, and most if not all can be found in your nearest reasonable-sized supermarket. Also, the recipes are (as you might reasonably expect), very plant-forward, but not entirely plant-based (as you might have guessed from the salmon on the front cover).
Bottom line: if you’d like to eat more healthily for your brain, but are a little stumped on what to do with the four ingredients you remember are brain-healthy, this book will help expand your horizons—not to mention your culinary repertoire!
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Yes, blue light from your phone can harm your skin. A dermatologist explains
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Social media is full of claims that everyday habits can harm your skin. It’s also full of recommendations or advertisements for products that can protect you.
Now social media has blue light from our devices in its sights.
So can scrolling on our phones really damage your skin? And will applying creams or lotions help?
Here’s what the evidence says and what we should really be focusing on.
Max kegfire/Shutterstock Remind me, what actually is blue light?
Blue light is part of the visible light spectrum. Sunlight is the strongest source. But our electronic devices – such as our phones, laptops and TVs – also emit it, albeit at levels 100-1,000 times lower.
Seeing as we spend so much time using these devices, there has been some concern about the impact of blue light on our health, including on our eyes and sleep.
Now, we’re learning more about the impact of blue light on our skin.
How does blue light affect the skin?
The evidence for blue light’s impact on skin is still emerging. But there are some interesting findings.
1. Blue light can increase pigmentation
Studies suggest exposure to blue light can stimulate production of melanin, the natural skin pigment that gives skin its colour.
So too much blue light can potentially worsen hyperpigmentation – overproduction of melanin leading to dark spots on the skin – especially in people with darker skin.
Blue light can worsen dark spots on the skin caused by overproduction of melanin. DUANGJAN J/Shutterstock 2. Blue light can give you wrinkles
Some research suggests blue light might damage collagen, a protein essential for skin structure, potentially accelerating the formation of wrinkles.
A laboratory study suggests this can happen if you hold your device one centimetre from your skin for as little as an hour.
However, for most people, if you hold your device more than 10cm away from your skin, that would reduce your exposure 100-fold. So this is much less likely to be significant.
3. Blue light can disrupt your sleep, affecting your skin
If the skin around your eyes looks dull or puffy, it’s easy to blame this directly on blue light. But as we know blue light affects sleep, what you’re probably seeing are some of the visible signs of sleep deprivation.
We know blue light is particularly good at suppressing production of melatonin. This natural hormone normally signals to our bodies when it’s time for sleep and helps regulate our sleep-wake cycle.
By suppressing melatonin, blue light exposure before bed disrupts this natural process, making it harder to fall asleep and potentially reducing the quality of your sleep.
The stimulating nature of screen content further disrupts sleep. Social media feeds, news articles, video games, or even work emails can keep our brains active and alert, hindering the transition into a sleep state.
Long-term sleep problems can also worsen existing skin conditions, such as acne, eczema and rosacea.
Sleep deprivation can elevate cortisol levels, a stress hormone that breaks down collagen, the protein responsible for skin’s firmness. Lack of sleep can also weaken the skin’s natural barrier, making it more susceptible to environmental damage and dryness.
Can skincare protect me?
The beauty industry has capitalised on concerns about blue light and offers a range of protective products such as mists, serums and lip glosses.
From a practical perspective, probably only those with the more troublesome hyperpigmentation known as melasma need to be concerned about blue light from devices.
This condition requires the skin to be well protected from all visible light at all times. The only products that are totally effective are those that block all light, namely mineral-based suncreens or some cosmetics. If you can’t see the skin through them they are going to be effective.
But there is a lack of rigorous testing for non-opaque products outside laboratories. This makes it difficult to assess if they work and if it’s worth adding them to your skincare routine.
What can I do to minimise blue light then?
Here are some simple steps you can take to minimise your exposure to blue light, especially at night when it can disrupt your sleep:
- use the “night mode” setting on your device or use a blue-light filter app to reduce your exposure to blue light in the evening
- minimise screen time before bed and create a relaxing bedtime routine to avoid the types of sleep disturbances that can affect the health of your skin
- hold your phone or device away from your skin to minimise exposure to blue light
- use sunscreen. Mineral and physical sunscreens containing titanium dioxide and iron oxides offer broad protection, including from blue light.
In a nutshell
Blue light exposure has been linked with some skin concerns, particularly pigmentation for people with darker skin. However, research is ongoing.
While skincare to protect against blue light shows promise, more testing is needed to determine if it works.
For now, prioritise good sun protection with a broad-spectrum sunscreen, which not only protects against UV, but also light.
Michael Freeman, Associate Professor of Dermatology, Bond University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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