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In this conversation, Andrew Weil revisits the 478 breath technique he learned from Dr. Robert Fulford, emphasizing its effectiveness in accessing the relaxation response and alleviating anxiety. He shares his personal experience with cannabis, stating he hasn't used it in over 20 years, and discusses his current use of matcha green tea and coca leaf, advocating for the legalization of coca due to its medicinal benefits. Weil highlights the Beneficial Plants Research Association he founded to explore neglected plants with potential health benefits, expressing a desire to resurrect it. He elaborates on kava, describing it as a natural sedative and anti-anxiety agent, and contrasts it with kratom, which he views with caution. The discussion touches on the psychedelic renaissance, with Weil noting the growing public interest in psychedelics for mental health and the need for trained professionals to guide these experiences. He reflects on his past writings about psychedelics at Harvard and the changing societal attitudes towards these substances. Lastly, Weil shares insights from his experiences in Okinawa, emphasizing the cultural respect for aging and the impact of diet on longevity.

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. Aditi Nerurkar, a Harvard physician and stress expert, discusses the alarming rise in stress and burnout, with 72% of people struggling with stress and 70% exhibiting burnout symptoms. She shares her personal journey from being a stressed medical student to becoming a doctor focused on stress management. The pandemic has exacerbated mental health issues, leading to increased rates of anxiety, depression, and sleep disorders. Nerurkar emphasizes the difference between acute and chronic stress, explaining that while humans are designed to handle short bursts of stress, chronic stress leads to burnout. Symptoms of burnout have evolved, with many experiencing atypical burnout characterized by an inability to disconnect from work rather than classic signs like apathy. She introduces the concept of "toxic resilience," where society glorifies constant productivity, leading to unhealthy stress levels. True resilience requires rest and self-compassion, not just pushing through challenges. The conversation highlights the importance of recognizing personal limits and the need for balance in life. Nerurkar's upcoming book, "The Five Resets," outlines strategies for managing stress. The first reset involves identifying what matters most to individuals, using the "MOST" framework: Motivating, Objective, Small, and Timely goals. She advocates for small, incremental changes rather than overwhelming lifestyle overhauls. The discussion also covers the impact of physical activity on stress management, emphasizing that even minimal exercise can significantly improve mental health. Nerurkar introduces the idea of "popcorn brain," a phenomenon resulting from constant digital stimulation, which contributes to anxiety and stress. Breathing techniques, such as diaphragmatic breathing and the "stop, breathe, be" method, are suggested as effective ways to manage stress in daily life. Therapeutic writing is also recommended for processing emotions and reducing stress. Nerurkar concludes by addressing the importance of social connections and the dangers of loneliness, which can have severe health implications. She encourages creating digital boundaries to protect mental health while staying informed about global events. The conversation underscores the need for balance, self-awareness, and compassion in navigating modern stressors.

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.

The discussion centers on various practices to enhance mental and physical well-being, focusing on the impact of light exposure, breathing techniques, and exercise on our health. Light exposure is emphasized as a crucial factor influencing our sleep, mood, and overall performance. Bright light, particularly from sunlight, helps regulate our circadian rhythms by signaling the hypothalamus, which controls hormones related to alertness and sleep. The recommendation is to get outside for 5 to 20 minutes of sunlight exposure in the morning, ideally without sunglasses, to synchronize the body's internal clocks. For those who wake up before sunrise, using bright artificial lights can serve as a substitute. The importance of avoiding bright light exposure in the evening is also highlighted to promote better sleep. Breathing techniques, particularly cyclic hyperventilation, are introduced as a method to manage stress and increase resilience. This involves taking 25 to 30 deep breaths followed by a breath hold, which can help raise one’s stress threshold and reduce the sharp spike of adrenaline in stressful situations. Regular practice can lead to improved emotional regulation and a sense of calm. The conversation also delves into the significance of physical exercise, particularly resistance training and cardiovascular workouts, in maintaining cognitive function and overall health. Engaging in regular load-bearing exercises releases osteocalcin, a hormone that supports brain health, while cardiovascular activities enhance blood flow and lymphatic clearance in the brain. The recommendation is to aim for 150 to 180 minutes of cardiovascular exercise and three to four days of resistance training each week. Additionally, the discussion touches on the importance of impulse control and self-regulation. Techniques to enhance these skills include practicing "no-go" responses, which involve consciously resisting impulses throughout the day. This can help strengthen the brain's ability to manage reactions and improve decision-making. The role of breathing and vision in managing stress is also explored. Relaxed breathing can lower heart rates, while widening one’s field of vision can enhance situational awareness. Physiological sighs, which involve a double inhale followed by a long exhale, are suggested as a quick way to alleviate stress. Finally, the conversation concludes with reflections on personal success, emphasizing the importance of self-improvement, maintaining friendships, and understanding one’s role in the larger context of life. The speaker expresses a commitment to sharing knowledge about human biology to help others improve their lives and interactions.

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.

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.

Hypnosis isn’t losing control; it’s a precise brain state that teaches people to regulate mind and body. Three core mechanisms emerge: reduced activity in the dorsal anterior cingulate cortex, a node tied to attention and threat detection; increased functional connectivity between the dorsolateral prefrontal cortex and the insula, strengthening mind–body control; and inverse connectivity between the prefrontal cortex and the posterior cingulate, dampening the default mode network’s self-referential drift. Together they foster sharper focus, less salience-driven distraction, and better body awareness. Hypnosis is largely self-directed; induction is simple—a quick gaze upward, closed eyes, slow exhale, and a hand floating up. In hypnotizable individuals, this can happen within seconds, illustrating hypnosis as a trainable skill rather than a gimmick. Hypnotizability is a relatively stable trait, measured with a brief induction and scored, with long-term retest correlations indicating limited change. Clinically, hypnosis yields meaningful analgesia and stress reduction. In catheter-based procedures, patients’ pain dropped from about five to one, anxiety from five to zero, and opioid use halved, with faster recovery as a result of reduced distress. Remote self-hypnosis apps yield similar benefits for pain and stress, and can help chronic pain management. Hypnosis also supports smoking cessation, with randomized data showing a subset stopping after one session and many reducing cigarette use substantially; there are vivid patient stories of surprising improvements. Genetics play a role: a COMT variant modulates dopamine metabolism and appears to influence hypnotizability, while imaginative involvement and dissociative histories increase susceptibility. Personality patterns matter too—more organized, rational individuals may be less hypnotizable, whereas creative or imaginative people tend to respond more readily. Techniques range from direct inductions to using self-hypnosis to focus on body relations and breathing. Beyond pain and habit change, hypnotic work raises questions of agency, trauma, and social influence. It can reframe self-narratives, helping survivors process abuse or guilt, though concerns about coercion exist. Breath work complements hypnosis, accelerating relaxation and easing transitions into hypnotic states; cyclic sighing and paced breathing can lower anxiety and support sustained practice. The discussion also situates hypnosis alongside other altered states that suppress the default mode network, including meditation and psychedelics, highlighting a continuum of tools for attention, emotion regulation, and pain relief. In sum, hypnosis engages robust brain networks to reduce arousal, reshape perception, and expand personal agency when guided with care and integrated with other modalities.

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.

Andrew Huberman discusses his approach to supplementation, emphasizing the importance of establishing healthy baselines in sleep, exercise, and nutrition before considering additional supplements. He introduces shilajit, a mineral pitch from the Himalayas, noting its potential benefits in enhancing hormone levels, including free testosterone, and reducing cortisol. Huberman mentions that individual responses to shilajit can vary, and he personally experiences a 10-20% boost in certain hormone markers. He advocates for high-quality fish oil and probiotics as foundational supplements, highlighting their positive effects on mood and inflammation. Huberman also shares insights on other supplements like tonga ali and fedoja agrestis, which he cycles for vitality and energy. He emphasizes the need for personalized approaches to supplementation based on individual biology and blood work. The conversation shifts to stress management techniques, particularly the role of vision and breathing in modulating stress levels. Huberman explains how panoramic vision can induce relaxation by disengaging the alertness pathway, while specific breathing techniques, like doublet inhalation, can effectively reduce stress. He underscores the importance of integrating these practices into daily life for better mental health. Huberman expresses excitement about the evolving conversation around wellness and biohacking, noting the significance of personal experimentation and self-awareness in health journeys. He concludes by reflecting on the interconnectedness of physical, emotional, intellectual, and spiritual health, advocating for a balanced approach to living a fulfilling life.

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.