Dr Andrew Huberman: The One Daily Practice Everyone Should Do, Training Your Brain and Reducing Anxiety (re-release) #524
This episode features Dr. Andrew Huberman, a Stanford neuroscientist, discussing how vision and breathing influence human performance. He shares actionable insights on using morning light, panoramic vision, and specific breathwork to optimize sleep, mood, focus, and reduce anxiety.
Deep Dive Analysis
14 Topic Outline
Introduction to Circadian Rhythm and Light's Role
The Visual System as a Foundational Health Lever
Importance of Morning Light Exposure
Avoiding Bright Light in the Evening
Impact of Seasonal Light Changes on Biology
Technology's Effect on Children's Vision and Attention
Panoramic Vision for Anxiety Reduction
The Nervous System's Role in Health and Performance
Physiological Sigh for Immediate Stress Reduction
Prioritizing Action and Behavior for Mental Health
Nervous System Flexibility and Adaptability
Addressing Mindset and Psychological Triggers
Dr. Huberman's Supplement Recommendations
Building Resilience in Challenging Times
9 Key Concepts
Circadian Clock Function
Every cell in our body has a 24-hour oscillator, like a clock, that needs to be coordinated by a master clock (the suprachiasmatic nucleus) to ensure all bodily systems work coherently. Disruptions to this system are associated with various health issues, including digestive problems, mental focus issues, depression, and anxiety.
Intrinsically Photosensitive Cells
These are specialized nerve cells located in the neural retina at the back of the eye. They connect directly to the hypothalamus and the master circadian clock, playing a crucial role in detecting light, especially early morning sunlight, to set and synchronize the body's internal biological clocks.
Suprachiasmatic Nucleus (SCN)
Located in the hypothalamus, the SCN serves as the master circadian clock for the entire body. It acts as a conductor, sending signals to coordinate the 24-hour oscillators in all body cells, primarily in response to light signals received from the eyes, ensuring internal biological rhythms are synchronized.
Zeitgeber
A German term meaning 'time-giver,' used in circadian biology to describe environmental cues that help synchronize an organism's biological rhythms to the external world. Light is considered the primary zeitgeber, with other factors like meal timing, exercise, and temperature also contributing.
Myopia (Nearsightedness)
A vision condition where the eyeball lengthens, causing distant objects to appear blurry. This condition can be exacerbated by excessive close-up viewing, particularly with screens, and research suggests that spending time outdoors and viewing distant objects can help reduce its incidence.
Panoramic Vision
A visual technique where one expands their gaze to take in a wider field of view without moving the head or eyes, ideally including one's own body in the peripheral vision. This practice can induce a relaxing effect, decelerating the nervous system, and enhancing situational awareness and reaction times.
Self-Generated Optic Flow
This refers to the visual experience of the environment moving past you as you physically move forward, such as walking, running, or cycling. This process, involving slip-compensating eye movements, is known to powerfully inhibit threat reflex centers in the brain, like the amygdala, thereby reducing anxiety.
Neuroplasticity
The brain's remarkable ability to change its structure and function in response to experience. This means that both intentional practices (like specific visual or breathing exercises) and passive lifestyle choices (like screen time or lack of movement) can reshape the nervous system, for better or worse.
Physiological Sigh
A natural breathing pattern consisting of two quick, successive inhales through the nose, followed by a long, complete exhale through the mouth. This action efficiently reinflates deflated alveoli in the lungs and offloads carbon dioxide, serving as a rapid and effective method to immediately reduce stress and anxiety.
9 Questions Answered
The visual system, particularly the eyes, is the only part of the central nervous system outside the cranial vault, providing the primary way the nervous system gains knowledge about external circumstances, profoundly affecting energy, immune function, sleep timing, and appetite.
Viewing bright light, ideally sunlight, within 30-60 minutes of waking sets the master circadian clock, synchronizing all body cells, stimulating an early cortisol pulse for energy and focus, and initiating a 16-hour countdown to melatonin release, which improves sleep quality later that night.
Bright light exposure between approximately 10 p.m. and 4 a.m. can powerfully inhibit melatonin release, disrupting the body's clock schedule and system due to increased retinal sensitivity during these hours, negatively impacting sleep and overall well-being.
Yes, excessive close-up viewing, especially on screens, can cause the eyeball to lengthen, leading to myopia (nearsightedness). It can also contribute to anxiety and vision issues by keeping the eyes in a constant state of active focus.
Viewing things at a distance or using panoramic vision (expanding your visual field) has a relaxing effect by releasing a connection between the brain and brainstem involved in alertness, effectively decelerating the nervous system and inhibiting threat reflexes.
Self-generated forward movement (optic flow) causes the visual world to slip by, triggering slip-compensating eye movements that directly and powerfully inhibit the activity of threat reflex brain areas like the amygdala, thereby reducing anxiety.
Performing a 'physiological sigh,' which involves two quick inhales through the nose followed by a long, complete exhale through the mouth, immediately reduces stress and anxiety by reinflating lung alveoli and efficiently offloading carbon dioxide.
Thoughts are difficult to control directly, like 'grabbing fog.' Physical practices, such as breathing techniques or vision adjustments, provide a direct way to recalibrate the body's state, which in turn offers a new, calmer vantage point for addressing mental challenges.
A mentally healthy person is someone who possesses nervous system flexibility, meaning they can effectively transition between states of action, relaxation, focus, and sleep as needed, rather than being chronically stuck in one state like activation or exhaustion.
48 Actionable Insights
1. Coordinate Body Clocks with Light
Disruptions in circadian clock function are associated with various health issues, so coordinate the cells and systems of the body by ensuring light arrives at the eyes at appropriate times and is absent at other times.
2. View Morning Sunlight Daily
View bright light, ideally sunlight, within 30 minutes to an hour of waking (sooner if possible) for 5 to 10 minutes every morning to coordinate your body’s cells and systems and set your master circadian clock. This practice is foundational for mental and physical health and high performance.
3. Dim Lights in the Evening
Absolutely dim the lights in the evening and late hours, especially between 10 p.m. and 4 a.m., because melatonin (the sleep transition hormone) is powerfully inhibited by light, and retinal cells become highly sensitive to light at night.
4. Use Physiological Sigh for De-Stress
When feeling stressed, perform a physiological sigh: two inhales through the nose (a big one, then a tiny second squeeze) followed by a long, complete exhale through the mouth. This immediately reduces stress and anxiety by reinflating lung alveoli and offloading carbon dioxide.
5. Prioritize Action & Behavior First
When taking control of mental and physical health, prioritize actions and behaviors first, as they have a profound impact, are measurable, and allow for communication about tools, whereas thoughts and feelings are harder to control directly.
6. Develop Nervous System Flexibility
Cultivate nervous system flexibility, the ability to easily move between states of alertness and focus, and relaxation and calm, rather than getting stuck in one position. This ’tightness of the hinge’ allows for effective transitions throughout the day.
7. Practice Panoramic Vision for Relaxation
Dilate your gaze to see more of the space around you without moving your head or eyes (panoramic vision) to release a brain-brainstem connection involved in alertness, creating a relaxing, decelerating effect on your nervous system. This is useful for managing arguments, public speaking fear, or face-to-face communication.
8. Self-Generated Motion Inhibits Anxiety
Walking, biking, or jogging forward (self-generated motion) where the visual world slips by, directly and powerfully inhibits the threat reflex in brain areas like the amygdala, providing anxiety relief. This does not work on a treadmill if you are staring at a screen.
9. View Things at a Distance
Periodically view things at a distance, beyond screens or walls, ideally a horizon, to prevent headaches and eye strain from constant close-up focus, and to improve mood and metabolic function via the habenula.
10. Incorporate Micro Breaks for Focus
Take even short 10-second pauses during high attentional activities (learning, conversations) to allow the brain to store information faster, decompress, and return with a heightened level of focus, preventing focus depletion throughout the day.
11. Use Visual Focus Training
If struggling to focus, place a small crosshatch on a piece of paper at computer distance, and force your vision to converge on it, holding it with minimal blinking for about 60 seconds. This adjusts your visual and mental aperture, helping to rule out distractions.
12. Daily Visual Training Practice
Perform a daily visual training practice: close eyes and focus on internal state while breathing 3 times; open eyes, focus on hand (arm’s length) and breathe 3 times; look in distance and breathe 3 times; go into panoramic vision and breathe 3 times; then return to internal landscape or focused work. This trains the system to adjust to shifts and improves transitions between activities.
13. Be Intentional About Nervous System Changes
The nervous system constantly changes in response to experience; be intentional about forcing specific, beneficial changes through practices like light viewing and movement, otherwise, it may atrophy or change for the worse due to passive living.
14. Engage in Ongoing Psychological Work
Engage in hard, ongoing psychological work (e.g., therapy, journaling) to make the unconscious conscious, understand personal tendencies (pleaser, rebel), and intervene in one’s own thinking to avoid repeating unhelpful dynamics.
15. Filter Interactions Through Mental Reality
When encountering aggressive or concerning comments/behaviors, filter them through the reality that many people struggle with mental challenges, which can provide relief and foster understanding rather than getting triggered.
16. Journal to Expunge Anxieties
Do a little bit of journaling each day, even if handwriting is poor or sentences are incomplete, to place anxieties and stresses onto paper, which can help to expunge them.
17. Reinforce Yourself from Inside Out
In challenging times, remember that you have control over your nervous system and response system, and reinforce yourself from the inside out using simple, zero-cost tools and practices to build resilience and achieve a more optimal stance to deal with challenges.
18. Avoid Sunglasses for Morning Light
When viewing morning sunlight, do not wear sunglasses as they filter out specific wavelengths of light necessary for setting the circadian clock. Corrective lenses (contacts/glasses) are fine as they focus light to the retina.
19. Don’t Stare Directly at Sun
Never look directly at any light, artificial or sunlight, that is so bright it’s painful to look at, as your blink reflex exists for a reason to protect your eyes.
20. Morning Light Even on Cloudy Days
Even if there’s cloud cover, getting outside for morning light is still important and far better than relying on artificial sources, as natural light carries higher intensities needed to set the circadian clock.
21. Use Bright Artificial Lights Pre-Sunrise
If you wake up before the sun comes out, turn on as many bright artificial lights as you can, then go outside once the sun is out to get natural light.
22. Avoid Windows/Windshields for Light
Do not view morning light through a window or car windshield because the filtration of light wavelengths will make the clock-setting mechanism take about 50 times longer.
23. Morning Light Sets Cortisol Pulse
Viewing light early in the day ensures your vital cortisol pulse arrives early, providing energy and focus for 10-14 hours. A late-shifted cortisol peak, caused by not viewing morning light, is associated with chronic depression, worse mood, evening anxiety, and sleep trouble.
24. Adjust Morning Light Duration
The duration for morning light viewing varies; on a very bright day (e.g., snow field), 1-2 minutes may suffice, but on overcast days, you might need 30 minutes or more.
25. Make Up for Missed Light
If you miss a day of morning light viewing, no big deal, but try to get twice as much time outside the next day, as the clock mechanism is a ‘slow integrator’ counting light energy over time.
26. Low-Cost SAD Lamp Alternative
As a low-cost alternative to expensive SAD lamps, use a blue ring light (like those used by YouTubers) at your breakfast table or while working in the morning to get the system going.
27. Don’t Use Blue Blockers Day
Avoid wearing blue blockers in the morning and throughout the day, as blue wavelengths are crucial for setting the circadian clock and short-circuiting this signal will impair wakefulness and clock setting.
28. Morning Light Aids Sleep Transition
Morning light viewing sets a 16-hour countdown to melatonin release, which is responsible for transitioning into sleep, thereby helping to establish a better transition and quality of sleep later that night.
29. Exercise Outdoors Without Sunglasses
To synergize with morning light viewing, try to do your exercise outside without sunglasses, maximizing light exposure.
30. Use Low-Positioned Lights at Night
In the evening, ideally have lights low in your physical environment, such as table lamps or lights near the floor, as the cells transmitting light information to the hypothalamus reside in the lower half of the retina and view the upper visual field. Firelight and moonlight are fine.
31. Don’t Panic About Night Light
If you occasionally turn on bright lights in the middle of the night, don’t freak out, as these are slow integrating systems; consistent exposure to screens or bright lights late at night is what significantly disrupts your system.
32. Aim for 80% Compliance
Treat light exposure like nutrition or exercise, aiming to get it right or mostly right about 80% of the time, and don’t panic if you violate these tools every once in a while.
33. Prioritize Getting Outside for Kids
Children and adults should spend two hours a day outside, even doing homework on a computer, to greatly reduce the incidence of myopia and improve mood and metabolic function through different light-to-eye mechanisms.
34. Don’t Look at Phone Walking
When walking outside, avoid looking at your phone to maximize the benefits of self-generated optic flow and panoramic vision for anxiety relief and overall health.
35. Panoramic Vision Enhances Awareness
Engaging in panoramic vision not only relaxes but also makes you more alert, aware, and responsive, improving reaction times and situational awareness, as the responsible neurons transmit information faster.
36. Avoid Constant Screen Context Switching
Be mindful of constant context switching on phones and social media, as rapidly darting visual attention between new contexts can lead to clinically legitimate ADHD-like symptoms.
37. Leverage Short-Term Stress for Health
Understand that short-term mental and physical stress causes adrenaline release, which signals the immune system to activate killer cells and anti-inflammatory cytokines, making it beneficial for resisting infection and healing wounds.
38. Use Cold Showers for Adrenaline
Take deliberate cold showers (e.g., three minutes every two or three days) to cause adrenaline release, which has been shown to improve resistance to bacterial, viral, and fungal infections.
39. Use Cyclic Hyperventilation for Adrenaline
Engage in cyclic hyperventilation (a breathing practice not detailed here, but mentioned as causing adrenaline release) to improve resistance to infections.
40. Learn to Control Adrenaline Release
Learn to control adrenaline release and its timing by increasing it when beneficial, coming off the accelerator, and slamming on the brake to shut it down, using practices like vision and respiration.
41. Use Body to Recalibrate Mind
When thoughts are racing or mind is not where you want it to be, look to your body and use physical practices (like the physiological sigh) to recalibrate your state of mind, gaining a new, calmer vantage point to analyze mental challenges.
42. Practice Yoga Nidra for Sleep
Use Yoga Nidra, a free 30-minute non-sleep deep rest (NSDR) script, during wakefulness or if waking up at night, to get better at falling asleep and improve sleep quality.
43. Use Self-Hypnosis App for Health
Utilize a free self-hypnosis app like Reveri.com (for Apple and Android) to improve sleep, manage anxiety, and enhance focus.
44. Consider Magnesium for Sleep
For trouble falling and staying asleep, consider taking magnesium threonate or bisglycinate, as many people benefit from it, and it’s non-addictive (though 5% may experience gastric discomfort).
45. Consider Apigenin for Sleep
Take 50 milligrams of apigenin (chamomile extract) to help fall and stay asleep, as it can be very beneficial for many people.
46. Take EPA Fatty Acids for Mood
Consider taking 1 to 3 grams of EPA essential fatty acids daily, as studies show it can stand up against SSRIs for antidepressant effects without the side effect profile, and can lower required dosages of such drugs.
47. Eat Fermented Foods for Gut
Consume one to four servings of fermented foods per day to improve gut health and reduce inflammation, based on scientific evidence.
48. Be a Scientist About Supplements
When experimenting with supplements, introduce them one at a time to determine what works and what doesn’t, and always consult your physician to ensure they are safe for you.
7 Key Quotes
The visual system is unique in that it's the only piece of the central nervous system that resides outside the cranial vault.
Dr. Andrew Huberman
Light early in the day is the primary signal by which that clock setting mechanism occurs.
Dr. Andrew Huberman
Blue wavelengths of light are one of the main wavelengths that sets the circadian clock. In other words, don't wear blue blockers in the morning and throughout the day.
Dr. Andrew Huberman
Walking forward or biking forward or jogging forward, provided that your visual system isn't staring at your phone the whole time... you're actually creating an anxiety relief.
Dr. Andrew Huberman
Trying to control your thoughts with thoughts is like trying to grab fog. It's very, very difficult.
Dr. Andrew Huberman
The truth is that there is no magic stork or fairy or pill or anything that's going to be handed to us or deployed that's going to take care of our challenges. We are, we are all responsible for our immediate wellbeing.
Dr. Andrew Huberman
Our species is remarkable. We we've come through far worse than what we're dealing with now, believe it or not.
Dr. Andrew Huberman
5 Protocols
Morning Light Viewing Protocol
Dr. Andrew Huberman- Get up in the morning and within 30 minutes to an hour (ideally sooner), go outside.
- View bright light, ideally sunlight, for about 5 to 10 minutes.
- Do not wear sunglasses; corrective lenses (contacts/glasses) are fine.
- Do not stare directly at the sun or any light that is painful to look at.
- If it's cloudy, still go outside as it's better than artificial light.
- If you wake before sunrise, turn on as many bright artificial lights as possible, then go outside once the sun is up.
- Do not view through a window or car windshield, as it filters necessary wavelengths.
- If you miss a day, try to get twice as much time outside the next day.
- Optional synergy: Exercise outside without sunglasses.
- Low-cost artificial light alternative: Use a blue ring light (like those for YouTubers) at your breakfast table or while working in the morning.
- Avoid: Blue blockers in the morning and throughout the day.
Evening Light Avoidance Protocol
Dr. Andrew Huberman- Dim the lights in the evening and late hours, especially between 10 p.m. and 4 a.m.
- Keep lights as dim as needed to safely move about evening activities.
- Avoid bright screens (phones, tablets, computers) during these hours.
- Optimal lighting: Use table lamps, lights near the floor, firelight, or candlelight. Moonlight is also fine.
- Note: If you occasionally need to turn on bright lights (e.g., bathroom, hospital visit), don't panic, as these are slow integrating systems, but consistent exposure is problematic.
Anxiety Relief and Focus Protocol (Vision-Based)
Dr. Andrew Huberman- Panoramic Vision: Periodically throughout the day, or when feeling stressed/triggered, expand your visual field without moving your head or eyes. Try to see more of the space around you, including your peripheral vision. This helps relax the nervous system.
- Distance Viewing: Regularly view things at a distance, beyond screens or walls, ideally a horizon if possible. This helps prevent myopia and improves mood.
- Self-Generated Optic Flow: Engage in forward movement like walking, jogging, or biking outdoors, ensuring your visual system is not fixated on a phone. This inhibits threat reflexes and reduces anxiety.
Visual Training for Focus and Transitions
Dr. Andrew Huberman- Step 1 (Interoception): Close your eyes and just concentrate on your internal state (interoception), breathing three times.
- Step 2 (Near Focus): Open your eyes, stare at your hand or something at about arm's length, focus your visual attention there, and breathe three times.
- Step 3 (Distance Focus): Look into the distance (as far as possible), focus your visual attention there, and breathe three times.
- Step 4 (Panoramic Vision): Shift into panoramic vision (even if indoors), breathing three times.
- Step 5 (Return to Internal/Work Focus): Bring yourself right back into your internal landscape, or focus on a specific point (like a crosshatch) to prepare for work.
Physiological Sigh for Stress Reduction
Dr. Andrew Huberman- Take a big, long inhale through the nose.
- Immediately follow with a second, sharp inhale through the nose, sneaking in a tiny bit more air.
- Exhale completely through the mouth in a long breath.
- Frequency: Perform once, or two to three times, as needed to reduce immediate stress and anxiety.