co2 tolerance

Breathing For Better Health, Easy Fixes, and How to Breathe with Stardust

 
 

Listen Instead of Reading

 

Hey,

Welcome back to another issue of The Breathing 411. Here are 4 thoughts, 1 quote, and 1 answer for this week.

I hope you enjoy it!

 
 
 
 

4 Thoughts


1. Posture is Easier with the Breath

“Question: Do I start with breathing correctly or addressing my posture?

Answer: Breathing comes first. Aligning your body correctly will come more easily once you have your breathing down. Plus, most cues to help with posture end up making a person tighten more rather than relax on the inhale.”

- Belisa Vranich and Brian Sabin, Breathing for Warriors

I constantly struggle with my posture (but only all the time 😂). So, I loved this answer from two of the world’s leading experts on the topic.

Additionally, as we’ve all probably experienced, you can’t really get a good breath unless you have good posture, so they really go hand-in-hand. Good breathing leads to better posture, and good posture leads to better breathing.

So sit up straight, take a relaxing breath, and enjoy the rest of this post : )

***

Related Quote: “What the bodily form depends on is breath (chi) and what breath relies upon is form. When the breath is perfect, the form is perfect (too)…Consequently, breath and form must be accomplished together.” - Chinese adage from The Primordial Breath (but I found it in Breath)

2. Fixing Hyperventilation Easily with Slow Breathing

“The mechanism by which hyperventilation is targeted by HRVB has not been proven, although it is reasonable to hypothesize that it involves a combination of slow breathing, decreased emotional and autonomic reactivity, and attention to breathing mechanisms for controlling it.”

- Applied Psychophysiology and Biofeedback (2020)

Because slow breathing increases HRV and improves autonomic and emotional reactivity, it naturally reduces your stress. It naturally improves your sensitivity to carbon dioxide. And it naturally optimizes gas exchange.

All of this helps you breathe calmer more often.

So to fix hyperventilation easily, maybe we don’t need to fix it at all? Perhaps we should just enjoy our slow breathing practice and, with time, let our improved physiological state naturally lead to optimal breathing volume.

This approach won’t be suitable for everyone, but if you struggle with overbreathing, this might be the best place to start.

***

P.S. Ironically, when people start a slow breathing practice, they often overcompensate for the slower rate by taking bigger breaths and end up mildly hyperventilating. For this reason, many researchers and coaches (myself included) suggest that slow breathing is not enough—we must also focus on breathing volume. However, as pointed out in this 2020 meta-analysis, slow breathing might self-correct with time.

3. Scientific American: “Proper Breathing Brings Better Health”

“Breathing is so central to life that it is no wonder humankind long ago noted its value not only to survival but to the functioning of the body and mind and began controlling it to improve well-being.”

- Scientific American

This is perhaps my favorite online article published about breathing. But, I realized I have somehow never shared it here.

I especially loved a part near the end. It’s almost as if the author is surprising himself with all the benefits of breathing as he’s researching and writing the article, and he can’t believe this stuff isn’t widely used:

“In fact, I am mystified that controlled breathing is not recommended and practiced more widely. Perhaps it is perceived as too simple, commonplace and obvious to be a remedy.”

Those were my exact feelings when I found “breathing.”

Enjoy the excellent read!

***

Related Quote: “Even more foolishly I had assumed that a universal awareness of the importance of breathing existed. Nothing could have been farther form the truth.” - Carl Stough (also found in Breath)

4. How to Breathe Stardust with Stardust

“Every atom in your body that is heavier than helium was made inside a star, usually as it was exploding.  Carbon, oxygen, iron, all of it. Take a breath, and breathe stardust with stardust. This body is billions of years old.”

- Rick Hanson, Ph.D., Neurodharma

That is all. 🤯

 
 
 
 

1 Quote

“A single breath has more truth in it than all your thoughts about breathing will ever have.”

– Adyashanti

P.S. Thanks to great friend E.S. for sending this quote to me. It’s almost as if that quote is specifically calling me out on this newsletter 😂

 
 
 
 

1 Answer

Category: Hyperventilation

Answer: It is suggested that adults with a respiratory rate greater than this number “should receive immediate medical review.”

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(Cue the Jeopardy! music.)

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Question: What is 27 breaths per minute?

In good breath,

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

P.S. “Guess we’ll head out too”

 
 
 

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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 Breathing 411 - The lung microbiome, David Blaine, and a perfect breath

 

Happy Monday! Welcome to another edition of The Breathing 4.1.1.

Below you’ll find 4 thoughts, 1 quote, and 1 answer (think "Jeopardy").

Thank you for reading!

 
 
 
 

4 THOUGHTS

1. On Practicing the Fundamentals

"If someone at Kobe’s level needs to commit hours to practicing the fundamentals, then so do all of us. Kobe taught me a pivotal lesson that morning. The basics are simple, but not easy."
- Alan Stein Jr., Raise Your Game

Imagine the best basketball player on the planet allows you to watch him practice. Then, he spends hours working on his fundamentals. Nothing fancy, no showboating, just the basics. That’s exactly what Alan Stein saw when he watched Kobe Bryant practice during his prime.

We talk about breathing here, not the highest level of basketball ever played. But the message is the same.

With all the fancy breathing techniques and new approaches, it’s easy to be looking for the "next thing" (—> guilty here <— ). But let’s not forget that it all comes down to the basics. They’re simple, but they’re not easy.

(This idea, like many, was inspired by knowledge from the Optimize Program.)

2. Oxygen Therapy Harms the Lung Microbiome

We’ve discussed how inhaled oxygen can lead to adverse effects in people with diabetes. Specifically, high levels of inhaled oxygen can reduce arterial function. But there might be other problems with oxygen therapy, especially when done over prolonged periods.

For example, your lungs have their own microbiome (pretty neat). And a recent study showed that inhaled oxygen harms this microbiome, leading to an increased risk of lung damage. This idea is especially relevant during COVID-19:

“Upon hospitalization, these patients are administered oxygen in an attempt to bring their levels back up to normal. However, a new study hints that this universal therapy may have unintended consequences via an unexpected source -- the microbiome.”
- ScienceDaily

Read the whole summary from ScienceDaily here:

Oxygen Therapy Harms Lung Microbiome in Mice

3. David Blaine on Breath Holds, CO2, and 45 Minutes Without Air

David Blaine was recently on the Joe Rogan Podcast. They began talking about breath-holds within 5 minutes (this link should take you right to it).

Here are two quotes I loved from it:

"The breath-holding thing is all about like, a CO2 build up in the bloodstream, and it’s about a tolerance level to it…"

And when Joe asks about the panicked feeling you get when holding your breath, David’s reply is:

“That’s not an O2 deprivation. That’s a trigger from a CO2 build-up, which is giving you an alert…"

All of you "breathing nerds" already knew this. But it is little tidbits like these that help the general population learn.

He goes on to talk a little about pre-breath-hold hyperventilation, blacking out, and how we can go 45 minutes without air.

In addition to the breath-hold stuff, it’s a fascinating interview.

4. Is there a Perfect Breath?

“What is the perfect breath? Far from being some noble yet unreachable goal that takes years of rigorous practice to master, a perfect breath is any breath you take for which you are completely and mindfully aware.” - Al Lee & Don Campbell

That definition is, well, perfect. But let’s not forget about James Nestor’s perfect breath, which has deeper roots in science and physiology:

"They discovered that the optimum amount of air we should take in at rest per minute is 5.5 liters. The optimum breathing rate is about 5.5 breaths per minute. That’s 5.5-second inhales and 5.5-second exhales. This is the perfect breath."

 
 
 
 

1 QUOTE

"Your quality of sleep is closely related to how you breathe, both when you sleep and when you are awake."

- Anders Olsson

 
 
 
 

1 ANSWER

Answer: The amount of time it takes blood to circulate around your entire body.

…

(Cue the Jeopardy music.)

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Question: What is one minute?*

(This fun fact came from James Nestor’s Breath.)

 
 

The Breathing 4.1.1. - Can This Acid Help You Digest Oxygen Better?

 

I hope this edition of "The Breathing 4.1.1" helps start your week off right.

Below you’ll find 4 thoughts, 1 quote, and 1 answer (think "Jeopardy"). Enjoy!

 
 
 
 

4 THOUGHTS

1. My #1 Non-Breathing Tip to Improve Your Breathing

There are non-breathing ways to improve your breathing. Here’s the easiest and most helpful one I’ve found: Add 2-4 hours between dinner and bedtime.

For example, I now eat dinner around 5:30 p.m. and go to bed around 7:45 - 8:00 p.m. (I used to eat closer to 7:00 p.m. with the same bedtime).

After one or two nights of the earlier dinner, my CO2 tolerance increased by about 20 seconds. And it’s remained that way ever since. If you’re not already, give it a shot and see how you feel after a couple of nights.

(As a side note, I also lost about 5 lbs after 1-2 weeks of doing this. So, when I saw this article on ScienceDaily, it jumped off the page at me: People who eat a late dinner may gain weight.)

2. Can This Acid Help You Digest Oxygen Better?

"Oxygen is what we breathe in. CO2 is what we internally produce in order to allow us to use that oxygen most efficiently." - David Bidler, Breathe to Perform

I love that interpretation. Rather than thinking of CO2 as a waste product, why don’t we instead view it as something our body produces to use the oxygen we breathe in.

While reading this passage, I also thought of a new analogy. It’s not technically correct, but I think it helps get the point across:

Your body produces stomach acids to digest food. It produces blood acids to digest oxygen.

3. Why Don’t We Breathe Slowly, 24/7?

I talk about the benefits of slow breathing a lot (maybe too much). With all of those benefits, it begs the question: Why didn’t we evolve to breathe slowly all the time? (Thanks, Ben!)

Rather than breathing slowly all the time, I believe we evolved something even more powerful: The ability to control our breathing.

We have been given access to our autonomic nervous system. We can choose to ramp it up or choose to slow it down. We can respond to our outer environment while being in control of our inner one.

With great power comes great responsibility. It’s up to us if we use it or not.

4. How Your Body Remembers High Altitude (1-Minute Podcast)

This episode of 60-Second Science from Scientific American explains how our red blood cells "remember" exposure to high altitude:

Red Blood Cells Remember Your Mountain Vacation

Although breath holds and high altitude exposure are not the same thing, we can elicit similar drops in blood oxygen saturation, presumably leading to similar effects. But, they’re not permanent:

"So the longer you stay at sea level before you re-climb to high altitude, then such memory will gradually disappear." - Yang Xia, UT Health Science Center

That’s why I’m also a fan of consistency over intensity to hep keep the benefits around.

 
 
 
 

1 QUOTE

"However, there is a bridge between our conscious mind and the subconscious action of the autonomic nervous system – breathing."

- Stephen Elliot with Dee Edmonson, The New Science of Breath

 
 
 
 

1 ANSWER

Answer: In 1978, two mountain climbers achieved this monumental feat for the first time.

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(Cue the Jeopardy music.)

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Question: What is climbing Everest without supplemental oxygen?

In good breath,
Nick

P.S. When You Finish Your To-Do List.

 
 

The Breathing 4.1.1. - Breathing That Makes You Smarter

 

Happy Monday and welcome to another edition of "The Breathing 4.1.1."

Below, I share 4 thoughts, 1 quote, and 1 answer (think "Jeopardy"). Enjoy!

 
 
 
 

4 THOUGHTS

1. Why Increasing Your CO2 Tolerance Just Makes Sense

i. Carbon dioxide is your primary stimulus to breathe. When you feel breathless or air hunger, that is due to high levels of CO2, not low levels of oxygen.

ii. Carbon dioxide helps you use oxygen more efficiently via the Bohr effect.

Therefore, being able to tolerate more CO2 just makes sense. You’ll delay the onset of breathlessness while simultaneously improving oxygen delivery.

2. Should You Be Doing Breathing Exercises All Day?

Not in my opinion. The goal of all of this "breathing stuff" is to reset your breathing to healthy levels so you don’t have to think about it all the time.

3. Can Your Breathing Make You Smarter?

Nasal breathing synchronizes brainwave oscillations in the piriform cortex, amygdala, and hippocampus. This coherence improves cognitive function when compared to mouth breathing.

Read More: Nasal Breathing Synchronizes Brainwave Activity and Improves Cognitive Function

4. If You or Your Child Suffers from This Condition…

If you’re reading this, the adverse health effects of mouth breathing probably seem obvious to you by now. But maybe not everyone else.

That’s why it is always great to see an article about it in a more mainstream publication like ScienceDaily. The final paragraph is both wonderful and comical (without trying to be):

"At this time, many health care professionals are not aware of the health problems associated with mouth breathing. If you or your child suffers from this condition, speak with a health care professional who is knowledgeable about mouth breathing."

Read The Full Article on ScienceDaily:

"Mouth breathing can cause major health problems"

 
 
 
 

1 QUOTE

"We can’t learn how to breathe, but we can learn how to stop not breathing."

- Richard Rosen, The Yoga of Breath

 
 
 
 

1 ANSWER

Answer: The only human organs that can float in water.

…

(Cue the Jeopardy music.)

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Question: What are the lungs?

In good breath,
Nick

P.S. Nostalgia.

 

Our somewhat surprising breathing patterns during sleep

Best-Bridge.png

We spend 1/3 of our life sleeping. And sleep is arguably one of the most important aspects of good health. Therefore, I expected that during sleep, breathing would be slow, deep, and rhythmic (i.e., “perfect”).

However, a review published in 1984 in Clinical Science showed that breathing rate is actually highly variable during sleep. In fact, breathing rates often increase and become irregular and shallow, especially during rapid eye movement (REM) sleep.

Although breathing rate might increase, the overall breathing volume is reduced, dropping as much as 16% from waking values.

This drop in volume is accompanied by relative hypoxia (low O2) and hypercapnia (high CO2). We discuss improving CO2 tolerance quite often. During sleep, your CO2 tolerance increases by as much as 66%.

What do these findings mean from a practical perspective?

Well, sleep is clearly a time when breathing should reduce and CO2 should increase. Therefore, if you are sleeping with your mouth open, you are likely overbreathing and not reaching the physiological states your body was meant to reach during sleep.

Luckily, this is an easy fix. Simply taping your mouth at night will restore nasal breathing and will provide the first step in reducing breathing volumes to their natural levels during sleep.

If you are not already, give it a shot. This one small change has had the greatest positive impact on my health and energy. It might do the same for you.

In good breath,
Nick