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Nose vs. Vagus, Meditation for a Meaningful Life, and Trust Brings Calm


Reading Time: 2 min 0 sec

I hope the next 24’ish breaths are the most nourishing of your day.


4 THOUGHTS

1. Breathing for Better Brain Health Workshop

A reminder that I am teaming up with Eddie Stern to bring back the Breathing for Better Brain Health workshop on June 8th. In it, you’ll learn the science of how breathing affects our brains, plus practical ways of applying that wisdom. And since it’s Eddie and me on the same Zoom, you will get lots of humor, Q&A, and random tangents.

Click here to learn more and save your spot.

2. Meditation, Puzzle Pieces, and a More Meaningful Life Image

“This is what meditation enables us to do. In meditation we take an inspiring ideal…and set it before us morning and evening…An ideal like this gives us a picture to keep our eyes on throughout the choices of the day, so that little by little we can rearrange the pieces of our lives.”

- Eknath Easwaran, Climbing the Blue Mountain

I’ve recently taken a wholehearted plunge into practicing Passage Meditation. And although I shortened the passage, this analogy from Easwaran sums it up perfectly: Just like you need the picture on a puzzle box to know how to start, meditating on an inspiring passage gives you a clear ideal to guide your day. As life hands you pieces—stressors, setbacks, successes, failures—you can more easily fit them into a meaningful life image 👏

3. The Nose vs. the Vagus Nerve

“The emerging scenario strongly suggests that the effects of SNB [slow nasal breathing], beyond the relative contribution of vagal stimulation, are mainly ascribable to olfactory epithelium stimulation.”

- Zaccaro et al. (2022)

Here’s another paper I’ve shared before that’s worth revisiting. It’s a fascinating study showing that the nose may be just as vital as the vagus nerve for getting the physiological and psychological benefits of slow breathing.

Check out this post that describes it in detail. We’ll also go over it in detail in the workshop.

4. Trust is Synonymous with Calm

“Trust is actually synonymous with calm.”

– Paul Loomans, I’ve Got Time

A wonderful reminder that if you can be a source of trust for others, it will help them feel calm. And if you can be a source of trust for yourself, it will help you feel calm, which is why breathing and meditation are so helpful for relaxing the nervous system.


1 Quote

‘Is there a life after death?’

Nobody seems to be grappling with the problem of: Is there a life before death?
— Anthony de Mello

1 GOOD BOOK

Awareness by Anthony de Mello

This is one of my favorites in the recent past. De Mello’s wisdom was genuinely life-changing for me. Also, I highly recommend the audiobook version—he’s hilarious, and reading the words doesn’t do it justice. (I often randomly put it on while walking because it’s so funny and full of wisdom that it never gets old.) I hope you’ll check it out!


In good breath,

Nick Heath, T1D, PhD
“Breathing is the compound interest of health & wellness.”

Enjoy these posts? Donate to say thanks!



P.S. one step above the Irish goodbye



SKY Recovery Program

My dear friend Colleen Loehr, MD, is co-teaching an online course for the SKY Recovery Program from June 7th to 9th. The course is open to anyone—people in recovery and people who have a friend or loved one with an addiction problem. The fee is only $95, so it’s an inexpensive way to learn the SKY technique for recovery and addiction. Click here to learn more about it. 🙏


The Breathing App for Diabetes

This is the first program specifically made for people with diabetes to help manage their stress through breathing and mindfulness practices. In addition to the amazing program inside the app, we have some really neat things coming up, so sign up now!

Learn more here.




Amazon Associate Disclosure

I’ve been recommending books for almost 6 years. Yet somehow, I just discovered that I could be an Amazon affiliate [face-palm]. In any case better late than never. Now, any Amazon link you click is an affiliate link. As an Amazon Associate, I earn from qualifying purchases. So, if you’d like to support my work, buying books through these links is helpful : )

* An asterisk by a quote indicates that I listened to this book on Audible. Therefore, the quotation might not be correct, but is my best attempt at reproducing the punctuation based on the narrator’s pace, tone, and pauses.


 

Brain Blood Flow, Humming Bee Breathing, and an Unhurried Life


Reading Time: 1 min 58 sec

I hope the next 24’ish breaths are the most nourishing of your day.


4 THOUGHTS

1. Breathing 101: How Breathing Affects Brain Blood Flow

1. CO₂ crosses the blood-brain barrier and reacts with water in the CSF to form H⁺ and bicarbonate.

2. The increased H⁺ lowers pH which, through a cascade of cellular and molecular pathways, relaxes the blood vessels.

3. This increases brain blood flow to ensure adequate oxygen delivery to the brain. The reverse is true for low CO₂.

Thus, when we overbreathe, we lower CO₂ and reduce brain blood flow; when we breathe light and slow, the opposite happens, and we increase brain blood flow.

2. Testing Progress on the Spiritual Path

“One of the ways to test our progress on the spiritual path is to see how much we are able to free ourselves from the oppressive pressure of time. The clock is the most eloquent symbol of the tyranny of time.”

– Eknath Easwaran, The Bhagavad Gita for Daily Living

This one felt like a spiritual slap in the face 😬 because, despite all my practice, I still catch myself rushing through the day, ruled by the microwave clock. The subtle shift Easwaran is pointing to is not that we escape time, but rather that we free ourselves from the pressure of time. To move with ease, no matter how busy we are. That’s progress.

3. The Science-Backed Benefits of Humming Bee Breathing

“The findings indicated that bhramari pranayama has a positive impact on psychological, cardiovascular and pulmonary health…It is…associated with lower levels of stress, anxiety, depression, sympathetic activity and blood pressure, and higher levels of attention, quality of sleep, parasympathetic activity, vagal activity and pulmonary functioning.

- Chetry et al. (2024)

That’s an impressive list. And while I’ve shared this study before, I recently put together a simple post that sums it up. I thought you might enjoy revisiting it like I did. Click here to check it out.

4. Some Great Advice for the Week

“So look for those little ways in the flow of life to feel a bit more relaxed, protected, strong, and at ease…and a little more grateful, glad, and successful…and a little more cared about and caring, and a little more loved and loving…The more often and deeply you do this, the greater the results.”

- Rick Hanson, Ph.D., Neurodharma


1 Quote

A simple, unhurried life can be full of wisdom and beauty.”
— Eknath Easwaran

1 GOOD BOOK

The Well-Lived Life by Gladys McGarey, MD

I’ve been raving about this book for over a year now—it’s one of my all-time favorites. I’ve received more messages from readers that this book changed their life than any other I’ve shared. Dr. McGarey was 102 when she wrote it, and you can truly feel her wisdom in every sentence. (She has since passed away, back in September, at the age of 103.) I can’t recommend this one enough.


In good breath,

Nick Heath, T1D, PhD
“Breathing is the compound interest of health & wellness.”

Enjoy these posts? Donate to say thanks!



P.S. a modern-day Descartes




SKY Recovery Program

My dear friend Colleen Loehr, MD, is co-teaching an online course for the SKY Recovery Program from June 7th to 9th. The course is open to anyone—people in recovery and people who have a friend or loved one with an addiction problem. The fee is only $95, so it’s an inexpensive way to learn the SKY technique for recovery and addiction. Click here to learn more about it. 🙏


The Breathing App for Diabetes

This is the first program specifically made for people with diabetes to help manage their stress through breathing and mindfulness practices. In addition to the amazing program inside the app, we have some really neat things coming up, so sign up now!

Learn more here.




Amazon Associate Disclosure

I’ve been recommending books for almost 6 years. Yet somehow, I just discovered that I could be an Amazon affiliate [face-palm]. In any case better late than never. Now, any Amazon link you click is an affiliate link. As an Amazon Associate, I earn from qualifying purchases. So, if you’d like to support my work, buying books through these links is helpful : )

* An asterisk by a quote indicates that I listened to this book on Audible. Therefore, the quotation might not be correct, but is my best attempt at reproducing the punctuation based on the narrator’s pace, tone, and pauses.


 

CO2 & Breath Regulation, a Fulfilling Life, and a Great Book on Movement


Reading Time: 2 min 11 sec

I hope the next 26’ish breaths are the most nourishing of your day.


4 THOUGHTS

1. Breathing 101: The Role of CO2 in Breath Regulation

1. CO₂ crosses the blood-brain barrier and reacts with water in the cerebral spinal fluid (CSF) to form hydrogen ions (H⁺) and bicarbonate.

2. Then, this rise in H⁺ lowers pH, stimulating central chemoreceptors in the brainstem.

3. These chemoreceptors send signals to the brain’s respiratory centers to activate the phrenic nerve, causing the diaphragm to contract, initiating an inhale.

It’s a rather neat and beautiful system 👏

2. A Fulfilling and Accomplished Life

“Yet everyday experience, along with centuries of philosophical reflection, attests to the fact that a fulfilling and accomplished life isn’t a matter of exerting ever more control. It’s not about making things more predictable and secure, until you can finally relax. … The greatest achievements often involve remaining open to serendipity, seizing unplanned opportunities, or riding unexpected bursts of motivation.”

– Oliver Burkeman, Meditations for Mortals

This is the essence of awareness (or “mindful living”): not trying to control every outcome, but instead remaining open to what life offers 👏.

3. Take Your Time in the Morning

“It’s much more pleasant for both you and the day you’re beginning to do the opposite - namely, to take your time in the morning. In many spiritual traditions, this is seen as an ideal time for meditation or looking inward. Such a moment of calm and stillness affects the rest of the day.”

- Paul Loomans, I’ve Got Time

I’m a huge fan of practicing breathing & meditation first thing upon waking, and this passage highlights why. It reminds me of this equally-powerful excerpt from my favorite teacher, Eknath Easwaran:

“The pace you set first thing in the morning is likely to stay with you through the day. If you get up early and set a calm, unhurried pace, it is much easier to resist getting speeded up later on as the pressures of the day close in on you. This simple step has profound effects. 👏

4. How Long Until Awakening?

“A disciple asks a Zen master: ‘How long does it take to be able to experience Awakening?

Maybe 20 years,’ answers the master.

And if I am in a hurry?’ asks the disciple again.

In that case, it is 50 years,’ concludes the master.”

- Steven Laureys, MD, The No-Nonsense Meditation Book

I think this is the 3rd time I’ve shared this passage. It’s one of my favorites and never gets old—full of wisdom and always brings a laugh.


1 Quote

Despite centuries of reports from followers of Eastern traditions that slow breathing can improve focus, bring a sense of calm when we might otherwise lose it and even whisk us away to an altered state of consciousness, most of us still don’t take time out from our busy lives to prioritize this simplest and most unobtrusive of body movements.”
— Caroline Williams

1 GOOD BOOK

Move by Caroline Williams

Here’s another book I can’t recommend enough. If you’re curious about how movement affects your mind, it’s a must-read. Williams even has a whole chapter on breathing—the most fundamental movement—which is worth getting the book for by itself. Check it out if it sounds interesting!


In good breath,

Nick Heath, T1D, PhD
“Breathing is the compound interest of health & wellness.”

Enjoy these posts? Donate to say thanks!

P.S. how to not get “Sunday scaries”

The Breathing App for Diabetes

This is the first program specifically made for people with diabetes to help manage their stress through breathing and mindfulness practices. In addition to the amazing program inside the app, we have some really neat things coming up, so sign up now!

Learn more here.


Amazon Associate Disclosure

I’ve been recommending books for almost 6 years. Yet somehow, I just discovered that I could be an Amazon affiliate [face-palm]. In any case better late than never. Now, any Amazon link you click is an affiliate link. As an Amazon Associate, I earn from qualifying purchases. So, if you’d like to support my work, buying books through these links is helpful : )

* An asterisk by a quote indicates that I listened to this book on Audible. Therefore, the quotation might not be correct, but is my best attempt at reproducing the punctuation based on the narrator’s pace, tone, and pauses.