How Your Breath Affects The Way You Burn Fat, The Importance Of A Daily 45 Minute Walk (With Your Mouth Shut!), The Pros And Cons Of Nasal Breathing & The Five Gear Breathing System That Will Transform The Way You Handle Stress with Brian Mackenzie #547

Apr 15, 2025 Episode Page ↗
Overview

This episode features human performance specialist Brian Mackenzie, who discusses how breath is the remote control to the nervous system, influencing stress, metabolism, and performance. He shares practical techniques for breathwork, managing stress, setting boundaries, and leveraging movement for well-being.

At a Glance
39 Insights
1h 49m Duration
18 Topics
5 Concepts

Deep Dive Analysis

Introduction to Breath and Nervous System Connection

Confronting Pain and Dysfunctional Breathing Patterns

The Three-Stage Stress Response Cycle

Distinguishing Stress Response from Chosen Behavior

Reframing Trauma: Mind-Body Connection and Personal Experience

Authenticity, Chronic Stress, and Nervous System Activation

Defining Human Performance and Growth Through Process

Finding Joy and Presence in Mundane Tasks

The Power of Breathwork for Emotional Regulation

Practical Breath Awareness Exercises for Daily Life

The Importance of Boundaries and Downregulating the Nervous System

Brian Mackenzie's Personal Boundaries and Movement Practices

The Five Gear Breathing System for Movement Intensity

Metabolic Benefits of Nasal Breathing (Gears 1 & 2)

The Importance of Mouth Breathing (Gears 4 & 5) and Oxygen Utilization

Developing Higher Breathing Gears for VO2 Max and Stress Resilience

The Role of Movement, Light Exposure, and Groundedness

Final Advice: Learning to Say No and Embracing Process

Stress Response Cycle

A universal three-stage process starting with a stimulus, followed by the nervous system's immediate reaction (sensory system on high alert), and then physiological processes (neurotransmitter/hormone release) that drive behavior. This cycle, if not recovered from, can lead to chronic stress.

Breathing Gear System

A five-gear framework developed to match breathing techniques to different activity intensities, from relaxed nasal breathing (Gear 1) for low intensity to power mouth breathing (Gear 5) for high intensity. It helps individuals optimize oxygen utilization and performance during exercise.

Respiratory Exchange Ratio (RER)

A metabolic indicator that shows what fuel source the body is primarily using. An RER of 1.0 indicates the body is burning carbohydrates, while lower values (e.g., 0.95) suggest a mix of fat and carbohydrates, with more fat being burned at lower RER.

VO2 Max

The maximum amount of oxygen an individual can utilize per kilogram of body weight per minute. It serves as a key indicator of cardiorespiratory fitness and overall health, with higher values generally correlating with better health outcomes and increased capacity.

Oxygen Utilization at Tissues

Beyond just delivering oxygen to the muscles, this concept refers to how efficiently the body's tissues, particularly mitochondria, can actually use the oxygen supplied. Inefficient utilization can limit performance and indicate underlying metabolic issues, often linked to insufficient oxygen intake at higher intensities.

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How is our breath intimately linked to our nervous system and stress response?

Breathing is described as 'the remote control to the nervous system,' allowing individuals to regulate their stress responses by becoming aware of and manipulating their breath patterns.

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What are the three stages of our stress response cycle?

The cycle involves a stimulus, followed by the nervous system's immediate, high-alert response, and then physiological processes (like adrenaline release) that drive behavior.

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Can breathwork help address past trauma or chronic stress?

While breathwork can help regulate the nervous system to allow for introspection, it's emphasized that no amount of breathing will change pain one is unwilling to confront; reality and personal choice are crucial for adaptation.

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What is the 'Five Gear Breathing System' and how does it relate to activity?

It's a system that matches breathing techniques to different activity levels, from relaxed nasal breathing (Gear 1) for low intensity to power mouth breathing (Gear 5) for high intensity, optimizing oxygen use.

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Why is nasal breathing beneficial for fat burning and metabolic health?

Nasal breathing keeps the body more aerobic, meaning it primarily utilizes fatty acids for fuel, which is akin to drawing from a 'checking account' of energy, promoting metabolic efficiency.

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Why is it important to also develop mouth breathing for higher intensity activities?

While nasal breathing is crucial for lower intensities, mouth breathing (Gears 4 and 5) is essential during higher-intensity efforts to bring in sufficient oxygen for tissue utilization and to develop the 'top end' of the respiratory system, improving VO2 max and overall capacity.

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How does one improve oxygen utilization at the tissue level?

This can be improved by allowing the system to breathe appropriately for the intensity, not artificially limiting oxygen intake (e.g., by over-nasal breathing at high intensities), and through strength training which aids mitochondrial development.

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How can setting boundaries improve overall well-being?

Establishing clear boundaries, such as specific work cut-off times, allows for down-regulation of the nervous system, fosters presence in other life areas, and ultimately leads to more authentic and desired activities.

1. Confront Underlying Emotional Pain

Confront underlying emotional pain or past trauma, as simply controlling breathing without addressing these root causes will not lead to lasting change.

2. Choose Your Stress Response

Recognize that while physiological stress responses are automatic, you have a choice in how you behave and recover from that stress, allowing for adaptive responses.

3. Practice Cognitive Reframing

Look inwards at your triggers and identify internal insecurities or inadequacies being activated by external stimuli, rather than blaming external factors.

4. Invest in the Process

Invest fully in the process of daily activities and personal development, rather than being solely focused on future goals, to find unlimited possibility and presence.

5. Find Joy in Daily Activities

Cultivate joy and presence in mundane daily activities like washing dishes or doing laundry by reframing your perspective and investing in the process.

6. Say “No” for Freedom

Practice saying “no” to things you genuinely don’t want to do, even exciting opportunities, as this creates freedom and allows you to focus on what truly aligns with your desires.

7. Cultivate Breath Awareness

Become aware of your breathing patterns to regulate your stress response and overall health, as breath is the remote control to the nervous system.

8. Use Breathwork for Trauma

Use breathwork to change your nervous system state, enabling you to confront deep-seated pain or trauma that keeps you in a wired state.

9. Establish Clear Boundaries

Establish clear boundaries between work and personal life (e.g., stopping work emails at a set time) to signal to your nervous system that it’s time to switch off and relax.

10. Daily Nasal Breathing Walk

Engage in a daily 45-minute (or longer) walk, breathing exclusively through your nose and without screens, to build a metabolic foundation, improve stress response, and foster self-awareness.

11. Simple Calming Breathwork

Practice simple calming breathwork by inhaling and exhaling slowly through your nose, making the exhale slightly longer than the inhale, to comfortably bring down your nervous system.

12. Mindful Breathing Practice

Engage in a mindful breathing practice by closing your eyes and sequentially focusing on your belly movement (30s), chest movement (30s), and the air moving through your nostrils, allowing breathing to happen naturally without control.

13. Morning Breathwork Routine

Incorporate a 5-minute calming, grounding breathwork practice into your morning routine to intentionally start your day, regulate your nervous system, and improve metabolic function.

14. Mid-Day Breathwork Breaks

Take short (3-5 minute) breathwork breaks immediately after calls or meetings to regulate your nervous system and prevent accumulating stress throughout the day.

15. Downregulate After Arousal

After high-arousal activities (e.g., performing, intense work), find a quiet space to take 5-10 minutes for breathwork to downregulate your nervous system instead of resorting to unhealthy coping mechanisms.

16. Adopt Adult Bedtime Routine

Adopt a bedtime routine similar to children’s (dimming lights, relaxing activities) to signal to your nervous system that it’s time to wind down and prepare for sleep.

17. Prioritize Outdoor Movement

Prioritize outdoor movement and exposure to morning light, as these practices are critical for aligning with evolutionary biology and improving overall well-being.

18. Use Red Light at Night

Use red light in the evenings and at night (e.g., red filters on screens, red lights in home) to reduce stimulating blue light exposure, which positively impacts the metabolic system and sleep.

19. Engage in Hobbies

Engage in hobbies like creative cooking or outdoor activities to intentionally shift your nervous system state from work mode to a more playful and creative state.

20. Develop All Breathing Gears

Develop proficiency across all five breathing gears by incorporating moderate to high-intensity mouth breathing (Gear 4) during cardio intervals and power mouth breathing (Gear 5) during strength training. This ensures balanced respiratory system development and optimal oxygen utilization.

21. Match Breathing to Intensity

Match your breathing patterns to the appropriate level of movement and intensity, allowing your system to adapt and efficiently utilize oxygen, rather than artificially limiting it.

22. Include Strength Training

Include strength training at least twice a week to promote mitochondrial development, which is crucial for efficient oxygen utilization and overall metabolic health.

23. Vary Your Training

Incorporate variety into your training regimen, as diverse stimuli are more effective for adaptation and growth than repetitive routines.

24. Daily Walk for Self-Assessment

Use your daily walk as a self-assessment tool to gauge your body’s state and nervous system health, informing decisions about subsequent training intensity or rest.

25. Reframe ‘Have To’ to ‘Get To’

Reframe your language from “I have to” to “I get to” for daily tasks and situations, fostering a more positive and appreciative mindset.

26. Short-Lived Emotional Responses

Aim for emotions to be short-lived responses without carrying baggage from past experiences, allowing you to live in total joy.

27. Slow Down Excitement

Intentionally slow down and examine things that bring excitement to ensure they align with your true desires, preventing engagement in activities you didn’t actually want.

28. Core Values as Anchor

Establish and anchor yourself to core values like authenticity, as they provide a stable foundation for navigating interactions and decisions.

29. Avoid Chronic Stress

Actively let go of stress responses to avoid chronic stress, which prevents the parasympathetic nervous system from activating and leads to various health issues.

30. Performance for Growth

View performance as a path to personal growth, focusing on unlocking mental constructs to identify and overcome limitations.

31. Prioritize Playful Activities

Prioritize playful and nourishing activities by setting hard boundaries, recognizing their importance for well-being and presence, rather than relegating them to occasional leisure.

32. Physical Activity for Groundedness

Engage in regular physical activity to foster groundedness and presence, as movement is a fundamental component of well-being across various philosophies.

33. Breathing for Mitochondria

Actively work on your breath as a powerful “hack” to enhance mitochondrial function, which is central to energy production and overall health.

34. Understand Breathing Gears

Understand and apply the five-gear breathing system to match your breathing patterns to activity levels (Gear 1-5) for optimal performance.

35. Nasal Breathing for Fat Loss

Prioritize nasal breathing during low-to-moderate intensity activities to enhance fat burning, as nasal breathing promotes aerobic metabolism, which efficiently utilizes fatty acids.

36. Ability to Nap Indicator

Assess the health of your nervous system by your ability to take a nap after a stress response, as a healthy system can switch off and recover.

37. Life’s Narrative Determines Quality

Recognize that the quality of your life is determined by the narrative you choose to place on your experiences, not the experiences themselves.

38. Find Purpose in Everything

Shift your focus from finding a singular life purpose to actively finding purpose and mindfulness in every activity you undertake.

39. Behavioral Change is Key

Focus on changing behavioral patterns, as simply wanting to feel differently without altering behavior (like breathing patterns) is often ineffective.

There is no amount of breathing that will change the pain you are not willing to confront.

Brian Mackenzie

Breathing is the remote control to the nervous system.

Casper van der Meulen (quoted by Brian Mackenzie)

All goals apart from the means are an illusion. Becoming is a denial of being.

Bruce Lee (quoted by Brian Mackenzie)

In a healthy organism, an emotion is a short-lived response.

Eckhart Tolle (quoted by Brian Mackenzie)

Oxygen is a useless destructive molecule without CO2 and CO2 is what knocks that, helps knocks that oxygen molecule out of the red blood cell to go to the cell to be used.

Brian Mackenzie

I think no is the path to freedom because you'll only be doing the things that you truly want to be doing if you learn to say no to the things you don't.

Brian Mackenzie

Daily Breath Awareness Practice

Brian Mackenzie
  1. Sit down and shut your eyes.
  2. Pay attention to your belly moving with every inhale and exhale for about 30 seconds, without forcing anything.
  3. Switch your attention to how your chest moves through every breath for 30 seconds, allowing it to happen naturally.
  4. Pay attention to the air moving through your nostrils for 30 seconds, without having to control your breathing.

Downregulating After Stimulating Events (e.g., performance, intense work)

Brian Mackenzie
  1. Go to a green room or wherever you have an opportunity to separate yourself from people.
  2. Take five or 10 minutes to do some breathing exercises.
  3. Optionally, incorporate breath hold work if desired, to further bring the nervous system down.

Daily Foundational Walk for Metabolic Health and Stress Resilience

Brian Mackenzie
  1. Walk for at least 45 minutes a day.
  2. Keep your mouth shut, breathing exclusively through your nose (Gear 1).
  3. Avoid screens and distractions; get lost in the exploration of your surroundings.
  4. If you struggle to maintain nasal breathing, take a few mouth breaths and then return to nose breathing.

Developing Higher Breathing Gears (for those over-nasal breathing)

Brian Mackenzie
  1. Work at intensities just above Gear 2 (e.g., heart rate zone 2 to 4) using mouth breathing (Gear 4) for intervals during structured cardio, at least twice a week.
  2. Incorporate strength and conditioning at least twice a week to reach intensities where you naturally move more air (Gear 5), such as after heavy squats or during powerlifting sets.
  3. Ensure continued practice of Gear 1 breathing during easier parts of workouts or daily low-intensity activities to maintain the lower-end capacity.
over 20,000 times a day
Daily breaths Most people breathe this often without paying attention.
17 or 18,000 steps a day
Brian Mackenzie's daily step average This is a significant increase from his activity levels five years prior.
above about 40, 45
Respiration rate limit observed in some individuals during high intensity This limit was observed in individuals struggling to move enough air during higher breathing gears.
between 0.95 and 1.0
RER range for Rangan Chatterjee during testing Indicates he was burning some fat even at relatively moderate to high intensities.
four or five o'clock
Brian Mackenzie's typical work cutoff time A boundary he sets to allow for hobbies and nervous system down-regulation.
30 seconds or so
Recommended duration for breath awareness practice (per focus area) For focusing on belly, chest, or nostrils, then switching.
five or 10 minutes
Recommended duration for downregulating after a stimulating event To be done in a separate space, using breathing techniques.
60 to 90 minutes
Duration of Brian Mackenzie's morning walk Done instead of sitting breathwork, often outdoors and without screens.
80%
Recommended percentage of daily breathing that should be nasal Refers to low-intensity activities and general daily breathing patterns.