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James Nestor discusses his journey from a copywriter to an author focused on the power of breath, culminating in his book "Breath." He highlights the significance of nasal breathing over mouth breathing, noting that chronic mouth breathing can lead to various health issues, including hypertension and sleep apnea. Nestor participated in a Stanford study comparing the effects of mouth and nasal breathing, revealing drastic health declines during mouth breathing and significant improvements when switching to nasal breathing. He emphasizes the role of nitric oxide produced through nasal breathing, which aids in immune function and overall health. Nestor also touches on the potential of breathing techniques to combat stress and inflammation, referencing Wim Hof's method, which has shown promise in enhancing immune responses. He advocates for practical breathing habits, such as using nasal strips and sleep tape, to improve health and well-being. Nestor concludes by expressing excitement about the growing interest in breathing research and its implications for health.

Welcome to the Huberman Lab podcast, where Andrew Huberman discusses the significance of breathing for mental and physical health. Breathing is essential for life, but its quality profoundly affects our well-being and performance. Huberman emphasizes that breathing is unique because it can be controlled consciously, bridging the conscious and subconscious mind. This control allows us to manage stress, alertness, and even hiccups through specific techniques. Breathing involves the intake of oxygen and the removal of carbon dioxide, both of which are crucial for bodily functions. Huberman clarifies that carbon dioxide is not merely a waste product; it plays a vital role in oxygen delivery to cells. He explains the mechanical aspects of breathing, including the roles of the nose, mouth, diaphragm, and intercostal muscles, as well as the importance of alveoli in gas exchange. Huberman introduces the concept of "physiological sighs," a breathing technique involving two deep inhales followed by a long exhale, which effectively reduces stress and autonomic arousal. He notes that many people overbreathe, leading to insufficient carbon dioxide levels, which can impair cognitive function and increase anxiety. He encourages listeners to practice diaphragmatic breathing and emphasizes the benefits of nasal breathing over mouth breathing for overall health. The podcast also covers the relationship between breathing patterns and cognitive functions, revealing that inhalation enhances learning and memory while exhalation supports physical performance. Huberman discusses the carbon dioxide tolerance test as a measure of breathing efficiency and introduces box breathing as a method to improve breathing patterns. Huberman highlights a recent study showing that structured breathwork practices, particularly cyclic sighing, can significantly reduce stress and improve mood compared to meditation. He explains that one physiological sigh can quickly restore calm and balance the autonomic nervous system. The episode concludes with practical advice on managing breathing during exercise, addressing hiccups, and the importance of maintaining a healthy breathing pattern. Huberman encourages listeners to explore these breathing techniques to enhance their mental and physical health, emphasizing that these practices are accessible and cost-free.

Dr. Jack Feldman, a pioneer in respiration research, explained the mechanics and neural control of breathing. He detailed how the diaphragm and rib cage facilitate air exchange, driven by the pre-Bötzinger complex for inspiration and a separate oscillator for active expiration. Feldman emphasized the mammalian diaphragm's evolutionary advantage, enabling efficient oxygen uptake through a vast alveolar surface area, critical for supporting large brains. He also discussed physiological sighs, involuntary deep breaths occurring every few minutes to prevent alveolar collapse, a vital mechanism for lung health and mechanical ventilation. The podcast then explored breathing's profound impact on brain states and emotional regulation. Rodent studies showed that deliberate slow breathing significantly reduces fear responses, demonstrating a mechanistic effect on neural circuits. This influence operates via olfactory signals, vagus nerve activity (linked to depression relief), and carbon dioxide levels, which affect brain pH and can induce anxiety. Volitional breathing also sends descending commands that modulate emotional states. Feldman suggested breathing practices can disrupt and weaken maladaptive neural circuits, promoting healthier brain function. He personally recommends short, consistent box breathing for improved performance and well-being. Finally, the discussion covered magnesium L-threonate, a supplement discovered to enhance long-term potentiation (neuroplasticity) and cognitive function. Human studies revealed it improved cognitive age by an average of eight years in individuals with mild cognitive decline and also aids sleep. Feldman underscored the value of mechanistic studies, even in rodents, to understand the efficacy and optimal application of these practices and supplements, moving beyond anecdotal evidence.

Breathing is not a cure-all, but controlling dysfunctional breathing can help restore balance in the body. James Nestor discusses the recent surge in interest in breathwork, especially following the pandemic, highlighting that insights into breathing have existed for centuries yet remain underappreciated in modern society. He notes that both breathing and sleeping are often taken for granted, despite widespread issues like dysfunctional breathing and sleep disorders. Nestor emphasizes that many people seek complex solutions for health issues, overlooking the simplicity of proper breathing, eating, and sleeping. He points out that the medical industry often lacks financial incentives to promote breathing techniques, as there is little profit in natural health solutions. He argues that understanding and improving breathing can empower individuals to take charge of their health, especially as misinformation about nutrition and wellness has proliferated. Breathing is a direct link to the autonomic nervous system, influencing energy levels and overall health. Nestor explains that dysfunctional breathing can lead to chronic conditions like asthma and diabetes, as it affects stress levels and inflammation. He shares research showing that slow, controlled breathing can alleviate symptoms of asthma and panic attacks. Nestor also discusses the importance of nasal breathing, especially during sleep, and offers practical tips for improving sleep quality, such as using sleep tape and adjusting bed height. He highlights the benefits of breathing techniques for athletes, noting that proper breathing can enhance performance and recovery. Finally, Nestor reflects on the ongoing research in breathing science and his commitment to sharing this knowledge, encouraging people to explore the profound effects of breath on health and well-being.

This episode of the Tim Ferriss Show features Dr. Andrew Huberman, a neuroscientist and professor at Stanford University, who discusses the significant roles of vision and breathing in regulating our mental and physical states. Huberman explains that our visual system is deeply connected to our central nervous system, influencing alertness and relaxation by signaling time of day and environmental conditions. He emphasizes that expanding our visual field can help reduce stress and promote a sense of calm. Huberman also highlights the importance of morning light exposure for regulating circadian rhythms and improving sleep quality. He recommends getting bright light into the eyes for 2 to 10 minutes upon waking to trigger cortisol release and set the stage for melatonin production later in the day. He cautions against excessive blue light exposure at night, which can disrupt sleep. The conversation shifts to the impact of breathing on our internal state. Huberman introduces the concept of the "physiological sigh," a specific breathing pattern that can quickly reduce stress. He explains how our breathing patterns are interconnected with our emotional states and can be used to manage anxiety and promote relaxation. Huberman shares his personal journey, detailing how a pivotal moment in his life led him to pursue neuroscience. He recounts a traumatic experience involving a fight that prompted him to change his path and focus on academic success. He emphasizes the importance of mentorship and self-reflection in personal growth. The discussion also touches on the vagus nerve, which connects the brain to various organs and plays a role in regulating the autonomic nervous system. Huberman explains that stimulating the vagus nerve can influence mood and alertness, and he shares insights from his research on the gut-brain axis. In terms of cognitive enhancement, Huberman discusses the use of supplements like alpha GPC and the importance of hydration for maintaining cognitive function. He also addresses the potential benefits and risks of testosterone and other hormonal interventions, emphasizing the need for careful management and medical supervision. Throughout the episode, Huberman advocates for a holistic approach to mental and physical health, combining behavioral tools, biological insights, and self-awareness to improve overall well-being. He encourages listeners to explore practices like yoga nidra and breathwork to enhance their mental states and manage stress effectively.

Controlling stress in real time is possible through breathing. Inhaling speeds up heart rate, while exhaling slows it down. Longer exhales promote calmness, utilizing respiratory sinus arrhythmia and heart rate variability to manage stress effectively.

James Nestor discusses how the human habit of dysfunctional breathing underpins a wide range of health issues, emphasizing that breathing is a continuous, energy-driving process rather than just a response to food and drink. He argues that most people breathe suboptimally due to anatomical and lifestyle changes that have emerged with industrialization, particularly noting smaller mouths and narrower airways that push people toward mouth breathing. The conversation explores how soft, processed foods and reduced chewing in early childhood contribute to facial and dental development that limits airway space, linking these structural changes to snoring, sleep apnea, and impaired nasal breathing. The discussion then shifts to the physiology of breathing, explaining that mouth breathing tends to shallowly pull air into the chest, reduces CO2 tolerance, and disrupts the balance of oxygen delivery to tissues. Nestor explains CO2’s essential role in releasing oxygen from hemoglobin and maintaining blood pH, warning that chronic over-breathing can place the body under sustained low-grade stress and blur the line between rest and stress. The host and guest examine the nose as the preferred conduit for air, noting benefits such as nitric oxide production, improved filtration, and better sleep quality when nasal breathing is habitual. They cover practical strategies to retrain breathing, including daytime nasal breathing, diaphragmatic technique, and gradual use of sleep tape, while acknowledging that structural obstructions may require medical or dental interventions such as deviated septum corrections or orthodontic considerations. Throughout, the pair reflect on the variability of individual circumstances, offering a spectrum of approaches rather than universal prescriptions. The episode also delves into broader implications for chronic disease, sleep, and mental health, highlighting the potential of breathing retraining to improve conditions like asthma, hypertension, and anxiety by stabilizing the autonomic nervous system and reducing nocturnal arousal. Personal stories from the guests, expert references, and a focus on accessible, low-cost practices underscore the theme that empowering everyday breathwork can meaningfully extend healthspan, provided foundational, consistent habits are established.

The episode centers on breathing as a daily, foundational physiology that can influence a broad range of health outcomes. James Nestor argues that while breathing happens automatically, habitual patterns—like mouth breathing and shallow chest breaths—undermine sleep, oral health, cognitive function, and athletic performance. He recounts how ancient cultures treated breathing as medicine and explains that modern life conditions, including indoor environments and processed diets, have driven a shift toward dysfunctional breathing. The conversation covers how mouth breathing at night can alter facial development, reduce nasal airflow, and contribute to sleep-disordered breathing, with implications for growth, jaw structure, and long-term health. The guests discuss practical pathways to revert to nasal, diaphragmatic breathing as a default, noting studies that link improved breathing mechanics to lower blood pressure, better oxygen utilization, and heightened mental clarity. They describe a simple nasal-breathing exercise—placing a hand on the abdomen and tracing five-second inhalations and five-second exhalations—to retrain the nervous system toward a state of relaxation and coherence. The dialogue also delves into more intense breath-work practices, sharing experiences of heightened emotion and transient physiological changes, while cautioning that the most reliable benefits come from building a normal, nasal-breathing foundation first. The discussion broadens to everyday environmental factors, such as carbon-dioxide levels in schools, offices, and aircraft, underscoring how indoor air quality can affect cognitive performance and energy. Throughout, Nestor emphasizes that solutions are inexpensive, accessible, and largely about habit change—breathing in a slower, deeper, nasal pattern and tuning into one’s body signals to reduce chronic stress and inflammation. The talk weaves personal anecdotes, historical context, and clinical observations to present a picture of breathing as a key determinant of health, cognition, and daily vitality, while debunking myths that breathing improvements require expensive gear or exotic rituals. The episode concludes with a reminder that progress comes from consistency and foundational practice, setting the stage for further exploration of breath-focused approaches that are grounded in science and everyday life.

James Nestor, an expert on breathing, emphasizes that dysfunctional breathing affects 99% of people, leading to various health issues like diabetes, asthma, and anxiety. He believes that correcting breathing habits can significantly improve health. Nestor's personal journey began when he faced respiratory problems while surfing, prompting him to explore breathwork, which ultimately resolved his issues and sparked his interest in the subject. He highlights that modern lifestyles, characterized by poor posture and environmental factors, contribute to dysfunctional breathing. Nestor argues that breathing should be considered a fundamental pillar of health, alongside diet and exercise. He notes that many diseases of civilization, including asthma and ADHD, are linked to poor breathing habits, particularly during sleep. Nestor conducted a self-experiment comparing nasal breathing to mouth breathing, which revealed significant negative effects from mouth breathing, including poor sleep quality and increased fatigue. He asserts that the majority of people can improve their breathing habits through simple, free practices. The conversation also touches on the importance of nasal breathing, which filters and humidifies air, and produces nitric oxide, enhancing respiratory health. Nestor discusses the detrimental effects of high carbon dioxide levels in indoor environments, which can impair cognitive function and overall health. He stresses the need for better ventilation in workplaces and homes to mitigate these effects. Nestor’s insights extend to children, noting that many face breathing issues due to poor facial development linked to modern diets and habits. He advocates for awareness of breathing patterns in children, as poor habits can lead to long-term health consequences. The discussion concludes with Nestor emphasizing the accessibility of breathwork as a healing modality, encouraging individuals to adopt simple breathing practices to enhance their well-being. He believes that understanding and correcting breathing dysfunction is crucial for improving health outcomes across various demographics.

Aerobic metabolism, established 500 million years ago, is the most efficient energy use method. Without it, individuals default to anaerobic processes, which indicate stress and poor energy management. Brian Mackenzie, founder of Power Speed Endurance, emphasizes the importance of breath work in optimizing performance. He notes that elite athletes, like Eliud Kipchoge, primarily breathe through their noses, which enhances aerobic capacity. Mackenzie discusses how poor breathing patterns can lead to sympathetic nervous system dominance, affecting overall health and performance. He highlights the significance of CO2 tolerance, stating that individuals with low tolerance often experience metabolic stress. Mackenzie advocates for nasal breathing to improve aerobic efficiency and overall health, suggesting that many athletes neglect this fundamental aspect of training. He introduces the State app, designed to personalize breath control protocols, enhancing CO2 tolerance and physiological responses. Mackenzie connects breath control to emotional regulation and cognitive function, asserting that breath is the primary means of influencing heart rate and stress responses. He encourages individuals to focus on breath work as a foundational practice in training and daily life, reinforcing that understanding and controlling breath can lead to improved performance and well-being.

Everybody's getting sick, getting fat, getting anxious, as if illness climbs like a hockey stick. We have access to vast health information, yet it’s mostly minutia when not tapping nature’s wisdom. Stop chasing supplements; go outside, and when indoors, act more like you would in nature, healthy. Training with Laird Hamilton and Aaron Rodgers involved pool work, breath holds, and temperature regulation, diversifying training. My specialty is bodywork and manual therapy, including Rolfing structural integration, focusing on fascia, connective tissue, hydration, and unbinding fascial layers. I unbind patterns and then integrate with movement, and I assess a person’s home and work life to engage the body for the other 85% of the day. Breath is foundational. If chronically stressed, breathing regulates sleep, muscle tension, and nervous system state. We start with rib cage work and breath, exhale to slow the heart via sinus respiratory arrhythmia, activating parasympathetic systems. A simple practice is to emphasize the exhale and slow pace; breath shapes voice, nervous system, and our ability to connect and negotiate by attuning to others. Top performers influence teams; energy matters. We discuss matching the fingerprint of another person’s nervous system to build rapport, and how someone is perceived as alpha or beta. A playful, “jester” energy can be valuable on a team. Leadership rests on trust, alignment, and safety; by attuning breath and posture, you bridge gaps and steer toward meaningful processes rather than only ROI. Sunlight is the body’s energy currency. Eyes are neurological tissue; a broad, panoramic view calms the autonomic nervous system. Dance and movement boost brain health and cognitive reserve; dancing with a partner helps protect against cognitive decline. We address knees and feet, about 40 million Americans suffer chronic knee pain, and advocate barefoot living and broad knee motion; grounded sitting can improve digestion and circulation. Sleep hinges on safety and certainty; environment matters more than pills. The idea is to change surroundings to alter neural chemistry, not the reverse. He cites Bruce Lipton’s epigenetics idea that culture around cells matters. He notes Align’s breathing program launching in January and a breathing archetype quiz at alignpodcast.com to measure practice and guide coaching progression.

In this episode of the Huberman Lab Podcast, Andrew Huberman speaks with Dr. Jack Feldman, a leading neurobiologist known for his groundbreaking research on the neuroscience of breathing. They discuss the critical role of breathing in overall health, mental focus, sleep, and emotional regulation. Dr. Feldman explains the mechanics of breathing, emphasizing the diaphragm's role and the brain centers responsible for regulating breath patterns, particularly the pre-Botzinger complex, which generates the rhythm of breathing. Dr. Feldman highlights the importance of breathing patterns, noting that how we breathe can influence our mental and physical states. He shares his own breathing protocols that can help enhance focus, reduce stress, and improve sleep. The conversation also touches on the physiological sigh, a natural mechanism that helps maintain lung health by preventing alveolar collapse, and how sighing occurs more frequently than most people realize. The discussion extends to the impact of breathing on emotional states and cognitive function. Dr. Feldman notes that breathing can be both a response to emotional states and a tool for influencing them. He describes how different breathing practices can modulate brain activity and emotional responses, suggesting that breathwork can be a powerful tool for mental health. Dr. Feldman also discusses the potential benefits of magnesium threonate, a supplement that may enhance cognitive function and support brain health. He explains how magnesium levels can influence neuronal activity and learning processes, emphasizing the importance of maintaining optimal magnesium levels for cognitive performance. Throughout the episode, Dr. Feldman encourages listeners to explore breathwork practices, suggesting that even short sessions can yield significant benefits. He advocates for a personalized approach to breathing techniques, encouraging experimentation with different methods to find what works best for individual needs. The conversation concludes with a call for more research into the mechanisms of breathing and its effects on health and cognition, highlighting the need for further exploration in this burgeoning field. Dr. Feldman's insights provide a comprehensive understanding of the intricate relationship between breathing, brain function, and overall well-being.