breath is life

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Science Talk, Stress, and 3 Exercises to Heal Any Ailment

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I hope the next 27’ish breaths are the most nourishing of your day.


4 THOUGHTS

1. Science Talk for “Breath is Life”

“We must continuously breathe precisely to bring oxygen to mitochondria to fuel oxidative phosphorylation, to charge our mitochondria, which sustain cellular life, brain activity, and consciousness.”

- Crosswell et al. (2024), Psychological Review

That’s a scientific way of saying: Breath is life.

So, let’s use this passage as inspiration to occasionally take a mindful breath, remembering that each one sustains “cellular life, brain activity, and consciousness.”

2. Stress, Inflammation, and a Valuable Tool for Coaches

“Stress-reduction techniques may serve as cost-effective interventions for preventing and treating metabolic disease.”

– Jurgens et al. (2023), Brain, Behavior, & Immunity​

​

The results of this paper suggest that stress-lowering exercises (like slow breathing) may reduce inflammation and, consequently, improve metabolic function. 👏

***

P.S. If you’re a coach, implementing these findings in your practice is straightforward; all you need is a Google Form. Join the Breath Learning Center: Sign Up -> Click Science 411s -> Click the top one and you’ll see exactly how (plus a Google Form you can copy).

3. Take a Breath Pilgrimage

“With pilgrimage you literally walk a physical path, have a clear goal—your destination—and a means of reaching it: walking. The simplicity...may be the secret to finding inner-direction.”

- Dr. Guy Hayward

That sounds a lot like a breath practice. You breathe a specific way, have a clear goal, and a way of achieving it: your breath. “The simplicity may be the secret to finding inner-direction.”

The best part? You don’t even have to leave your house 😊

4. Three Breathing Exercises that Will Heal Any Ailment

There are three breathing exercises that will heal any ailment:

  • The first one is to laugh.

  • The second one is to laugh.

  • The third one is to laugh.

(Inspired by last week’s quote from Mr. Rogers.)

1 Quote

“Stress is basically a disconnection from the earth, a forgetting of the breath.””
— Natalie Goldberg

(Thanks to Insight Timer for sharing this one.)

1 Answer

Category: Animals Breathing

Answer: According to one study, at least 65 different species of animals perform their own version of this breathing exercise, which you might have thought was uniquely human.

…

(Cue the Jeopardy! music.)

…

Question: What is laugh?

In good breath,

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

P.S. all nervous…

Breath Science & Wisdom Meditations for a Better Life

Learn to think, speak, and act in alignment with the person you want to be.

Get started today.

Four Seminars by Eddie Stern and Me

If you subscribe to The Breathing App for Diabetes before April 11th, you’ll be automatically enrolled in a four-part webinar series from me and Eddie Stern.

  • April 11 @ 6 p.m. EST: New Findings in Breathing Research Relevant to Diabetes

  • April 13 @ 2 p.m. EST: Exercise Light Stretches to Increase Your Lung Capacity

  • April 18 @ 6 p.m. EST: Advanced Practices in Breathing (Suitable for All Levels)

  • April 20 @ 2 p.m. EST: Deep Dive into Mindfulness and Metacognition

Recordings will be made available for anyone who can’t join live. And even if you don’t have diabetes, you will find these seminars helpful and engaging 🙏

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.

 
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Learn Better, 4 Gifts, and How Breathing Can Actually Change the World

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Today is a special edition of The Breathing 411.

Because today is 4/11.

It’s also World Breathing Day.

And it also happens to be my 35th birthday (to celebrate, I did one breath per minute for 35 minutes this morning <— maybe I’ll make it a new tradition 🙏).

To honor the occasion, there are 4 Free Gifts in Thought #3 below.

Thank you from the bottom of my heart for reading.

With love,

Nick

 

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4 Thoughts



1. How Breathing Can Actually Change the World, in 3 Super Practical Steps

  • Step 1: Tape your mouth at night.

  • Step 2: Breathe nasally 90-95% of the day.

  • Step 3: Forget about the rest, and use your newfound energy from Steps 1 & 2 to help you do whatever you were put on this planet to do.

2. ANB Significantly Enhances Learning and Retention of New Motor Skills

“Our results thus uncover for the first time the remarkable facilitatory effects of simple breathing practices on complex functions such as motor memory”

- Deep Breathing Practice Facilitates Retention of Newly Learned Motor Skills

This 2016 study on alternate nostril breathing (ANB), published in Nature Scientific Reports, genuinely blew my mind. (See full review in Thought #3.)

Here’s what they did:

  • Participants learned a new motor skill.

  • A control group rested for 30 minutes.

  • A breathing group did 30-min of ANB.

  • Then, both groups were tested on the skill they had learned.

  • Both groups were also tested again 24-hours later.

The results showed that the ANB group significantly (it was almost ridiculous) improved the learning and retention of that skill:

  • They were significantly better at the 30-min mark.

  • They were significantly better at the 24-hour mark.

One 30-minute breathing session. One day of improved learning and retention.

3. Science 411s, Book 411s, and The Breath is Life Learning Center (4 free gifts)

To celebrate World Breathing Day, here are four gifts.

Science 411s: 4 Fundamentals, 1 Big Takeaway, and 1 Practical Application

  • Free Science 411: Deep Breathing Practice Facilitates Retention of Newly Learned Motor Skills (the paper from Thought #2 above)

  • Free Science 411: Heart Rate Variability Biofeedback Improves Emotional and Physical Health and Performance: A Systematic Review and Meta Analysis

Book 411s: 4 Thoughts, 1 Quote, and 1 Idea That Will Change Your Life

  • Free Book 411: The Happiness Track: How To Apply The Science Of Happiness To Accelerate Your Success

  • Free Book 411: The Art of Impossible: A Peak Performance Primer

You can read, listen, or download them as PDFs here.

I hope you enjoy them!

4. Why We Breathe: Chemically and Spiritually

“Our drive to breathe is regulated by the medulla oblongata … When pH decreases (becomes more acidic due to the increase in CO2), chemoreceptors in the medulla send out a signal for the body to breathe. This means that our carbon dioxide levels have to rise to a sufficiently high level for our brain and body to know that it is time to take the next breath.”

- Inna Khazan, Ph.D.

It’s the perfect day to review why we breathe. So there’s the technical reason.

But breathing is a lot more than just gases. As Michael J Stephen, MD, tells us,

“That oxygen, life, and lungs all came into our world in relatively close succession is no coincidence. Only with oxygen and some means of extracting it are all things possible—thinking, moving, eating, speaking, and loving. Life and the breath are synonymous.”

So beyond chemistry, we ultimately breathe to live—to think, to move, to love. Breathing is, after all, what makes “all things possible.”


 
 
 

1 QUOTE

“It was ecstasy, it was sweet, air soughing in and all my little alveoli singing away with joy and oxygen-energy coursing through every space and particle of me.”

- Keri Hulme

 
 
 
 

1 ANSWER

Category: Body Chemical Composition

Answer: This gas is the most abundant element in the human body by mass.

…

(Cue the Jeopardy! music.)

…

Question: What is oxygen?

In good breath,

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

P.S. I’m only 35, I have my whole life ahead of me

 
 
 

* 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.

Sign Up For The Breathing 411

Each Monday, I curate and synthesize information from scientific journals, books, articles, and podcasts to share 4 thoughts, 1 quote, and 1 answer (like "Jeopardy!") related to breathing. It’s a fun way to learn something new each week.

 
 

22 One-Sentence Breathing Ideas for 2022

Let’s continue the tradition this year. Here are 22 one-sentence breathing ideas to kick off 2022. Enjoy!

***

Related: 21 One-Sentence Breathing Ideas for 2021

1. Demonstrations of breathing are small compared with the great thing that is hidden behind them. 

(Inspired by a Khalil Gibran Quote)

 

2. Breathing doesn’t heal you; it gives your body the environment it needs to heal itself.

 

3. We can be lost in breath, without knowing we have been breathing.

(Inspired by The Things You See Only When You Slow Down)

 

4. If you know only one breathing method, then you really know none; if you understand one breathing method, then you really know them all.

 

5. Breathing is the most direct path to practicing philosophy in our lives.

 

6. If breath is life, then optimal breathing is optimal living.

 

7. Science is timely; personal experience is timeless.

 

8. Every method works when used correctly, but no method works for everybody.

 

9. What one teacher says is essential, another will say is useless.

 

10. Breathing is a pair of leather shoes for life.

(Idea from The Tibetan Yoga of Breath)

 

11. The most practical tip for breathing is this: make it quiet and subtle. 

 

12. To breathe in a “quiet and subtle way” takes deliberate practice—effort leads to effortlessness.

 

13. Breathing may be my 70% solution but only your 20% solution.

 

14. Breathe less, sometimes more; breathe slow, sometimes fast.

 

15. We breathe through each nostril separately so they function better together as a whole.

 

16. Read about breathing but, most importantly, embody that education through practice.

 

17. Start by starting; one minute is always better than none-minutes.

 

18. A simple rule for getting started: 40% of your breath should be inhaling, 60% should be exhaling.

 

19. Holding implies tension and effort; pausing is natural and effortless.

 

20. Breath and mind are inseparable: This means you can use your breath, to change your mind, to change your breath for the better.

(A play on this line from Neurodharma: “Neurons that fire together, wire together. This means that you can use your mind, to change your brain, to change your mind for the better.”)

 

21. The goal of a breathing practice is better mindless breathing.

 

22. The joy of breathwork is breathing.

18 "Inspiring" Quotes on Breath as Life & Spirit

Here are 18 interesting quotes referring to the breath as life or spirit. It’s by no means comprehensive—just some that have stuck out to me over the years.

Enjoy!

1.  “Man was created of the Earth, and lives by virtue of the air; for there is in the air a secret food of life…whose invisible congealed spirit is better than the whole earth.”

- Michael Sendivogius

 

2.  “Of course, the word spirit itself, despite all of its incorporeal and non-sensuous connotations, is directly related to the very bodily term respiration through their common root in the Latin word “spiritus”, which signified both breath and wind.”

– David Abram, The Spell of the Sensuous

 

3.  “My words come from an upright heart; my lips sincerely speak what I know. The spirit of God has made me; the breath of the Almighty gives me life.”

– Job 33:3-4 

4.  “The fact is that when we focus on the breath, we are focusing on the life force. Life begins with our first breath and will end after our last. To contemplate breathing is to contemplate life itself.”

– Larry Rosenberg, Breath by Breath

 

5.  “Among the Creek Indians of the southwest, for instance, the creator God, the only divinity equal to or exceeding the Earth and the sun in its power, is called the Master of Breath.”

–David Abram, The Spell of the Sensuous

 

6.  “Interestingly, the Greek word psyche, which we often use to indicate our mind or the emotional state of our mind, actually means soul or spirit, or most tellingly, the breath of life.”

– Eddie Stern, One Simple Thing

 

7.  “That oxygen, life, and lungs all came into our world in relatively close succession is no coincidence.  Only with oxygen and some means of extracting it are all things possible—thinking, moving, eating, speaking, and loving.  Life and the breath are synonymous.”

- Michael J. Stephen, MD, Breath Taking

 

8.  “Then the LORD God formed the man from the dust of the ground. He breathed the breath of life into the man’s nostrils, and the man became a living person.”

– Genesis 2:7

 

9.  “The air I inhale enters my body and becomes part of me. The air I exhale moves into someone else and becomes part of her. Just by looking at how the air moves, we realize we are all connected to one another, not just figuratively, but also literally.”

– Haemin Sunim, The Things You Can See Only When You Slow Down

 

10.  “For breath is life, and if you breathe well you will live long on earth.”

- Sanskrit Proverb

 

11.  “Thus spirit = breath = life, the aliveness and power of your life, and to speak of your spirit (or soul) is to speak of the power of life that is in you.”

- Frederick Buechner

 

12.  “Breath is the bridge which connects life to consciousness, which unites your body to your thoughts.”

– Thich Nhat Hanh

 

13.  "Ancient Egyptian cultures also recognized the importance of the breath, the evidence of which we see today in the many ancient statues that had their noses broken off but otherwise were left untouched. This defacement was no accident, but a deliberate act by conquering groups to take the life, in this case the breath of life, away from these icons."

- Michael J. Stephen, MD, Breath Taking

 

14.  “Thus a great many terms that now refer to the air as a purely passive and insensate medium are clearly derived from words that once identified the air with life and awareness. And words that now seemed to designate a strictly immaterial mind or spirit are derived from terms that once named the breath as the very substance of that mystery.”

–David Abram, The Spell of the Sensuous

 

15.  “Zen Master Hogan said that the whole universe is in the breath. If you really pay attention to it, it takes you to its immaculate source.”

– Larry Rosenberg, Breath by Breath

 

16.  “Arise! the breath, the life, again hath reached us: darkness hath passed away and light approacheth.”

– Rig Veda 1:113:16

 

17.  “The breath of life is in the sunlight and the hand of life is in the wind.”

– Kahlil Gibran, The Prophet

 

18. “Life and respiration are complementary. There is nothing living which does not breathe nor anything breathing which does not live.”

- William Harvey, 1653, Lectures on the Whole of Anatomy

Breath as Spirit, Body and Mind, and 2 Opposing Views on Overbreathing

 
 

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4 Thoughts


1. 18 “Inspiring” Quotes on Breath as Spirit and Life

“Man was created of the Earth, and lives by virtue of the air; for there is in the air a secret food of life…whose invisible congealed spirit is better than the whole earth.”

- Michael Sendivogius, 17th Century

In this post, I share 18 excellent quotes referring to the breath as life or spirit. It’s by no means comprehensive—just a few that have stuck out to me.

Enjoy!

2. Overbreathing Causes Electrolyte Imbalance

“In addition, overbreathing and the resulting pH dysregulation also lead to electrolyte imbalances … When your pH becomes too alkaline, electrolytes migrate into muscle and brain cells instead of staying in the fluid outside of those cells. As a result, you may experience muscle spasms, weakness, and fatigue.”

- Inna Khazan, Ph.D., Biofeedback and Mindfulness in Everyday Life (this book is 🤯good)

I knew that overbreathing could dehydrate us, but this one was news to me. And since it’s hard to tell if you’re overbreathing without a capnometer, I think the most practical safeguard here is to simply breathe nasally, even during exercise.

3. A Different Take on Overbreathing

“Sometimes students get confused about using the breath throughout the day. They give it an inordinate amount of attention … That isn't the idea at all. The breath is a gateway into the present moment, making our attention to it greater, not less.”

- Larry Rosenberg, Breath by Breath

I’m an overbreather in a different way: I focus on my breathing too much. So, here’s a friendly reminder to all of us that breathing is just a tool. Let’s not give it “an inordinate amount of attention.” Just enough to make our lives richer and fuller. For most people, that’s as little as 10-20 min/day.

4. Breathing Translations—Go to the Source Yourself

You can read my thoughts on breathing (thank you 🙏). You can read what Wim Hof, Patrick McKeown, and others say. But these are just a few translations. The best thing to do is go to the original source for yourself.

And luckily, you don’t need training in any ancient languages to do your own translations. You just need the universal language of living: the breath of life.

 
 
 
 

1 QUOTE

“The good news is that through working with the breath, we actually hold the key to helping ourselves bring body and mind into balance.”

- The Tibetan Yoga of Breath

 
 
 
 

1 ANSWER

Category: Breathing 101

Answer: This is the amount of air that moves into and out of the lungs with each breath.

…

(Cue the Jeopardy! music.)

…

Question: What is tidal volume?

In good breath,

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

P.S. try for a new high score

 
 
 

Sign Up For The Breathing 411

Each Monday, I curate and synthesize information from scientific journals, books, articles, and podcasts to share 4 thoughts, 1 quote, and 1 answer (like "Jeopardy!") related to breathing. It’s a fun way to learn something new each week.

 
 

Yogic Wisdom, Start with the Breath, and Will Smith’s 60/40 Rule

 
 

Listen Instead of Reading

 
 
 

4 Thoughts


1. Start with the Breath (scientists agree)

“They [breathing patterns] thereby constitute an easy but potent avenue to manipulate the whole physiological state of the organism.”

- Respiratory Feedback in the Generation of Emotion

Want to potently “manipulate the whole physiological state of the organism”? Scientists start with the breath. And that’s why, for overall health, we do too: It’s the quickest and most efficient way to positively impact every aspect of your life. It’s actually quite absurd not to start there, in my humble opinion 😊

2. The Montessori Breathing Method

“The Montessori method emphasizes both intrinsic motivation and learning through doing. In fact, for this latter reason, it’s often called “embodied education.” Don’t just read about organic farming—go out and plant a garden.”

- Steven Kotler, The Art of Impossible

Let’s apply the same principles of Montessori education (aka embodied education<—absolutely love that) to our breathwork.

Read about the methods you’re interested in. Read about how breathing affects the whole physiological state of the organism. But then, most importantly, embody that education and learn through doing. As Confucius says, “What greater joy can there be than putting into practice what you have learned?”

3. Ancient Yogic Wisdom Wins (again)

“One of the things that the yogis really seemed to understand was that this circuitry didn’t just happen in the brain, it happened globally, with messages going in both directions: TOP DOWN (brain to body) and BOTTOM UP (body to brain).  The intrinsic link between prāna and citta accounts for why the yogis insisted on breathing practices as the primary means to pacify the mind. …Breathing can effectively modulate the reactive loop, and restore us to a more coherent frame of mind.”

- Robin Rothenberg, Restoring Prāna

I have nothing to add, except for one of these 🤯 Oh, and to re-read Thought #1 on how modern science agrees with this global perspective on breathing…

4. How Breathing Makes You Prosper, Part II

“If man’s breath is prosperous, then the body prospers.”

- The Primordial Breath, Volume I

Pop quiz from last week: Do you remember what prosper literally means?

To go forward with hope.

So, if the breath is prosperous, then the body prospers (and I’ll add that the mind and spirit prosper, too). Thus, we could argue that “the whole physiological state of the organism” goes forward with hope. Sounds good to me : )

Bonus Thought: Will Smith’s 60/40 Rule with His Mom

“When I say silly stuff, it makes the world lighter for her. But she needs me to say smart stuff too. That makes her feel safe. She thinks that the only way I'll be able to survive is if I'm intelligent. She likes about a 60/40 ratio of smart to silly.”

- Will Smith, Will

This has nothing to do with breathing, but since I shared a 60/40 breathing rule last week, this passage jumped out at me. It’s an excellent approach to life : )

 
 
 
 

1 QUOTE

“Life begins with our first breath and will end after our last. To contemplate breathing is to contemplate life itself.”

- Larry Rosenberg, Breath by Breath

 
 
 
 

1 ANSWER

Category: Breathing 101

Answer: The matching of air and blood flow in the lungs is known as this.

…

(Cue the Jeopardy! music.)

…

Question: What is ventilation-perfusion?

In good breath,

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

P.S. You think you can hurt my feelings?

 
 
 

Sign Up For The Breathing 411

Each Monday, I curate and synthesize information from scientific journals, books, articles, and podcasts to share 4 thoughts, 1 quote, and 1 answer (like "Jeopardy!") related to breathing. It’s a fun way to learn something new each week.

 
 

How To Breathe To Live Longer, plus a New Take on "Breathe Light"

 
 

Listen Instead of Reading

 

Greetings,

Here are four thoughts, one quote, and one answer for this week.

I hope you enjoy!

 
 
 
 

4 Thoughts


1. How To Breathe To Live Longer

Let’s synthesize some ideas on breathing for longevity and see how we can apply this knowledge in our own life today.

Part I: Breathe Through Your Nose

Here’s James Nestor describing how George Caitlin lived double the average life expectancy of his time:

“He credited his longevity to ‘the great secret of life’: to always breathe through the nose.” - Breath

Part II: Expand Your Lung Capacity

Next, here’s Nestor describing the Framingham Heart Study:

“They gathered two decades of data from 5,200 subjects, crunched the numbers, and discovered that the greatest indicator of life span ... was lung capacity … larger lungs equaled longer lives.” – Breath

Part III: Synthesis and Application

Part I is straightforward: breathe through your nose. But how do we expand lung capacity? Nestor provides a few different ways.

  1. Light to moderate exercise

  2. Lung expanding breathwork

  3. Long and complete exhales

Lung-expanding breathwork includes things like Wim Hof w/ “belly, chest, head,” the Yogic Complete Breath, and most breathing taught in freediving.

Long exhales also increase lung capacity by allowing “more air to get in” on the next breath. But, they have the added longevity benefit of activating the “relaxation response.”

Alright, so there we have it. To live longer, we should breathe through our noses all the time, increase our lung capacity, and practice extended exhales.

And for the ultimate expression of longevity, let’s not forget what Michael J Stephen, MD tells us in Breath Taking:

“Those of us who practice breathing exercises today may well pass on more disease resistant genes to our descendants tomorrow.”

Here’s to living longer, today. : )

***

Related Quote: “For breath is life, and if you breathe well you will live long on earth.” - Sanskrit Proverb

P.S. Here’s how I implement this in my life:

  • Nasal breathing 24/7.

  • 15 min of slow breathing in the morning w/ extended exhales.

  • 5-10 min of slow breathing before bed w/ extended exhales.

  • Practice Wim Hof style breathing, ~5-10 min a day.

2. A New Definition of “Breathe Light”

You’ve probably heard of Patrick McKeown’s fantastic Breathe Light exercise. But, motivated by this excellent post, I decided to add another definition of “breathe light:”

Perform slow nasal breathing in the sunlight.

Nasal breathing releases nitric oxide into the airways and carries it into the lungs. Sunlight liberates nitrite from your skin and increases circulating levels of nitric oxide. When combined, you get better blood flow and oxygenation.

As Dr. Steven Lin says in the post,

Sunlight + Slow Breathing = Health + Happiness

***

Related: Insufficient Sun Exposure Has Become a Real Public Health Problem

Related: Sunlight May Be the Next Beet Juice

Related: Ultraviolet Radiation-Induced Production of Nitric Oxide:A multi-cell and multi-donor analysis

3. “Vision and Breathing May Be the Secrets to Surviving 2020”

“Stress, he says, is not just about the content of what we are reading or the images we are seeing. It is about how our eyes and breathing change in response to the world, as well as the cascades of events that follow.”

- Scientific American

I know, I know, it’s 2021. But I’m a slow reader : )

In any case, this is an excellent article from Scientific American. Breathing, stress, vision, and Andrew Huberman—it’s just all-around amazing.

I hope you enjoy it as much as I did, if you haven’t already read it…

***

P.S. Thanks to Ben Greenfield for sharing this article, which is how I found it.

4. The Most Important Part of Your Breathing Practice

Whether you’re breathing for longevity, energy, relaxation, or any other reason, here’s the most important part of the practice: to practice.

***

P.S. Inspired by Brian Johnson’s Notes on Creativity On Demand

 
 
 
 

1 Quote

“Life is too short to be lived in fast forward. Slow down. Breathe it in. Enjoy it.”

– Ryan Holiday

 
 
 
 

1 Answer

Category: Sunlight and Respiration

Answer: Although sunlight helps humans produce nitric oxide, it provides plants with their energy through this process.

…

(Cue the Jeopardy! music.)

…

Question: What is photosynthesis?

In good breath,

Nick Heath, T1D, PhD
Diabetes is Tiny. You are Mighty.

P.S. I felt this on a spiritual level

 
 
 

Sign Up For The Breathing 411

Each Monday, I curate and synthesize information from scientific journals, books, articles, and podcasts to share 4 thoughts, 1 quote, and 1 answer (like "Jeopardy!") related to breathing. It’s a fun way to learn something new each week.

 
 

The Simplest Way to Increase Nitric Oxide Through Nasal Breathing

 

Hello, and happy Monday. Here are 4 thoughts, 1 quote, and 1 answer (like "Jeopardy") related to breathing that I hope you enjoy.

 
 
 
 

4 THOUGHTS

1. Can Mouth Breathing Increase Nitric Oxide?

Yes, but only if done on the exhale.

Nitric oxide (NO) is continuously produced in the nasal cavity. When we inhale through the nose, we harness this wondrous molecule and its benefits in the airways and lungs.

But if we also exhale through our nose, some of it gets washed out. Conversely, if we exhale through our mouth, the NO continues to accumulate in the nasal cavity. Then, more is brought in with the next nasal inhale.

In through the nose, out through the mouth.

Here’s what a researcher at the UCLA School of Medicine says:

"Exhaling through the nose is highly wasteful in that the NO would be expelled away from the lungs, where it is needed most." - Louis J. Ignarro, Inhaled NO and COVID-19

While I personally don’t recommend exhaling through the mouth all the time, there are clearly times when it might be beneficial, even if only for short periods.

The next thought has a few ideas about putting this knowledge into practice.

2. Increase Oxygenation by 10% (without increasing carbon dioxide)

"The subject inhaled through the nose with the mouth closed and exhaled through the mouth with the nose blocked. Thereby, a maximum of NO from the nasal airways is inhaled while a minimum is lost during exhalation." - Lundberg et al. (1996)

This protocol, nose in - mouth out, led to a 10% increase in tissue oxygenation when compared with mouth in-nasal out.

Notably, there were no significant carbon dioxide changes between protocols. Thus, by inhaling through the nose and exhaling through the mouth, we can increase tissue oxygenation without increasing carbon dioxide.

It’s all due to nitric oxide.

We should not base all our breathing on any one conclusion. And many factors need to be weighed, such as moisture and heat loss from exhaling through the mouth. But these results are intriguing nonetheless.

Here’s a simple way I put them into practice: I start each slow breathing session with 3-5 nose in - mouth out breaths before switching to nose in - nose out.

This study also implies that nose in - mouth out could increase oxygenation to the working muscles during exercise. So, if you’re uncomfortable with nasal-only breathing during your workout, switching to nose in - mouth out could be a beneficial compromise from an oxygenation perspective.

3. Why Slowing Your Breathing Helps You Relax

"By repeatedly stimulating the vagus nerve during those long exhalations, slow breathing may shift the nervous system towards that more restful state, resulting in positive changes like a lower heart rate and lower blood pressure." (my emphasis)

- BBC, Why Slowing Your Breathing Helps You Relax

It’s always fun to find an article reporting the science behind slow breathing from a news outlet like BBC. They even present some information you might not have considered, like how taking "big breaths" might benefit relaxation.

The article also touches on everything from pain to arthritis and provides many useful references. It's an excellent summary. Enjoy!

Thanks to 411 reader A. P. for inspiring this thought.

4. What is Breathing? And is it Woo-Woo (part II)?

When I was drafting last week’s thought about breathing being woo-woo, my grammar editor said that I was using the word "breathe" too much. Almost ironically, the synonym it suggested was: live.

I thought, "funny that a word synonymous with life itself is often considered woo-woo." But at the same time, interchanging "breath" with "life" is borderline woo-woo : )

But this is an appropriate synonym. Because at its root, what is breathing? At the risk of sounding a bit woo-woo myself, here is one answer: breathing is living.

 
 
 
 

1 QUOTE

"For breath is life, and if you breathe well you will live long on the earth."

- Sanskrit Proverb

 
 
 
 

1 ANSWER

Answer: This is the lowest blood oxygen saturation recorded in a human climbing Mount Everest.

…

(Cue the Jeopardy music.)

…

Question: What is 34.4%?

Wim Hof

"Fainting is okay, it just means you went deep." – Wim Hof

Maybe Wim Hof has some crazy ideas, but he has done more for "breathing" than just about anyone on this planet. I am incredibly grateful for him and his work.

His new book comes out tomorrow. I ordered a copy and hope you will too.

In good breath,
Nick

P.S. We’ve Been Ordering Pizza All Wrong