Huberman Lab

My guest is Alex Honnold, a professional rock climber considered by many to be one of the greatest athletes of all time for his historic free solo (no ropes or man-made holds) ascent of El Capitan in Yosemite. We discuss how to envision massive goals in any part of life and the process of breaking down those goals into actionable daily steps. Alex shares how embracing your uniqueness and mortality is the most powerful way to envision and live a fuller, more intentional life. We also discuss strength and endurance training, assessing risk and how Alex prepares mentally and physically for extreme challenges. We also discuss how to balance goal-seeking with family and work. Regardless of your goals, profession or age, this conversation will very likely reshape how you think about and approach your life, goals and potential. Read the episode show notes at hubermanlab.com. Thank you to our sponsors AG1: https://drinkag1.com/huberman Joovv: https://joovv.com/huberman BetterHelp: https://betterhelp.com/huberman Maui Nui: https://mauinuivenison.com/huberman Function: https://functionhealth.com/huberman Timestamps (00:00) Alex Honnold (02:17) Intrinsic & Extrinsic Motivation, Setting Big Goals (05:00) Preparing for Free Solo of El Capitan, Route Memorization & Conditions (10:09) Sponsors: Joovv & BetterHelp (12:35) Overthinking, Kinesthetic Flow; Climbing & Surprise (16:24) Aging & Climbing; Olympics & Broadening Climbing Culture; Parkour (23:04) Grip Strength, Aging, Climbing Technique, Yosemite National Park, Half Dome (29:00) Free Soloing & Rope Climbing, Safety & Risk; Aging & Death; Mentors (38:32) Sponsors: AG1 & Maui Nui (41:29) Climbing Lifestyle, Training, Career; Recovery (47:44) Technology, Smartphones & Distraction from Goals, Focus (51:09) Pursuing Ambitious Goals, Tool: Small Daily Challenges (55:56) Fear, Brain Scan & Public Speaking; Evaluating Risk (59:40) Doing What You Love, Life Crisis, Tool: Contemplating Death (1:03:49) Childhood, Passion & Choosing Career Path; University (1:11:46) Sponsor: Function (1:13:34) Outdoor Exploration, Yosemite, National Parks, Rucking, Trail Running (1:18:18) Girl Climber Film, Effort & Dedication (1:23:29) Strength Training, Pull-Ups, Muscle-Ups, Tool: Increase Sets & Reduce Soreness (1:31:59) Endurance & Strength Training Schedule; Posture; Running (1:38:52) Body Balance, Leanness; Muscle Cramps; Multi-Day Climbs (1:42:31) Awe in Nature, Spiritual Experiences; How Geckos Climb; Cliff-Dwelling Wildlife (1:46:46) Zero-Cost Support, YouTube, Spotify & Apple Follow & Reviews, Sponsors, YouTube Feedback, Protocols Book, Social Media, Neural Network Newsletter Disclaimer & Disclosures Learn more about your ad choices. Visit megaphone.fm/adchoices

In this Huberman Lab Essentials episode, I explore intermittent fasting and time-restricted eating, highlighting the positive benefits for weight loss, metabolism, organ health, circadian rhythms and cellular repair. I explain a practical framework for designing a time-restricted eating window that aligns with your lifestyle, exercise schedule and social schedule. I also cover what breaks a fast, how to support fasting with tools like salt intake and post-meal walks, and the use of fasting-related supplements, including berberine and metformin. Read the episode show notes at hubermanlab.com. Thank you to our sponsors AG1: https://drinkag1.com/huberman Carbon: https://joincarbon.com/huberman LMNT: https://drinklmnt.com/huberman Joovv: https://joovv.com/huberman Timestamps (00:00) Intermittent Fasting, Time-Restricted Eating (TRE) (00:50) Diet, Weight Loss, Calories & Hormones (05:50) Body’s Response to Eating vs Fasting, Fasting Duration (09:04) Sponsor: Carbon (10:50) Time-Restricted Feeding & Metabolic Benefits, Circadian Gene Rhythm (16:19) Optimal Meal Timing, Tool: Extend Sleep-Related Fasts (21:29) Sponsors: AG1 & LMNT (24:02) Eating Window Length, Tools: Adjusting TRE for Building Muscle, Regularity (26:55) Accelerate Transition to Fasting, Glucose Clearing, Tool: After-Meal Walk (28:36) Metformin, Berberine, Continuous Glucose Monitors; Cell Growth vs Repair, mTOR (31:46) Gut Microbiome; Transitioning to Intermittent Fasting & Individualization (34:03) Tool: 8-Hour Feeding Window & Weight Loss (35:25) Sponsor: Joovv (36:40) What Breaks a Fast?, Sugar; Tool: Using Salt to Support Fasting (39:42) Tool: Ideal Feeding Window Guidelines; Exercise & Social Considerations Disclaimer & Disclosures Learn more about your ad choices. Visit megaphone.fm/adchoices

My guest is Dr. David DeSteno, PhD, a professor of psychology at Northeastern University. We discuss science, God and religion, including what science can and can’t reveal about the existence of God and where religious faith and science do and do not align. We also discuss why questions about life’s origins, miracles and the afterlife have persisted across time. Dr. DeSteno explains how religious rituals cause meaningful improvements in mental and physical health and how prayer and gratitude can markedly reduce stress, increase honesty and compassion and buffer against loneliness and despair. Finally, we explore what distinguishes religions and mission-based communities from cults, and we discuss the role that communities such as 12-step and Burning Man play in modern life. Read the episode show notes at hubermanlab.com. Thank you to our sponsors AG1: https://drinkag1.com/huberman Our Place: https://fromourplace.com/huberman LMNT: https://drinklmnt.com/huberman Eight Sleep: https://eightsleep.com/huberman Function: https://functionhealth.com/huberman Timestamps (00:00) David DeSteno (02:10) Science & Belief in God, Does God Exist? (07:06) Universe Origins & Scientific Questions; Religion & Life/Health Benefits (15:16) Sponsors: Our Place & LMNT (18:23) Russell's Teapot, Overbelief, Faith; Religio-prospecting, Traditional Practices (26:49) Mediation & Compassion, Prayer & Stress Relief, Tools: Meditation, Prayer (34:40) Superstition, Prayers & Rituals; Mourning Rituals, Eulogies, Shiva, Connection (43:58) Grieving & Different Religious Traditions (47:15) Sponsors: AG1 & Eight Sleep (50:12) God vs Religion?; Prayer, Community, Religious Rituals & Ideals (56:17) Psychedelics, Ego Death, Right vs Left-Handed Roots (01:01:24) Good & Evil; Lies & Cheating; Gratitude & Prayer (01:11:03) Loneliness, Community & Religion, Relationship with God & 3AM Friend (01:16:25) Sponsor: Function (01:18:12) Feeling God; Intelligent Design, Evolution, Eye; Awe (01:25:21) Overwhelm & Spiritual Experiences, Awe Despite Understanding (01:31:01) Fear of Death, Afterlife, Tool: Contemplating Death (01:37:11) Time Perception, Connectedness, Traditional Practices (01:42:53) Addiction; 12-Step Programs & Surrender to a Higher Power (01:49:02) New Religions, Burning Man, Modern Spiritual Experiences, Cults (01:58:06) Cults vs Religions, Religious Interpretation & Reorientation (02:03:56) AI, Technology, Religion & Intelligence; Religious Branding (02:11:05) Religion Figures & Flaws, Direct Experience of God (02:15:13) Finding a Belief System, Embracing Religious Practices, Tool: Sampling Religions (02:21:40) Zero-Cost Support, YouTube, Spotify & Apple Follow & Reviews, Sponsors, YouTube Feedback, Protocols Book, Social Media, Neural Network Newsletter Disclaimer & Disclosures Learn more about your ad choices. Visit megaphone.fm/adchoices

In this Huberman Lab Essentials episode, my guest is Dr. Samer Hattar, PhD, the Chief of the Section on Light and Circadian Rhythms at the National Institute of Mental Health. We discuss how light powerfully shapes mood, sleep, appetite, learning and overall mental health by aligning—or misaligning—our internal circadian clock. We explain practical protocols to support your circadian rhythm, including morning sunlight exposure, dim evening lighting and regular mealtimes. We also discuss strategies to manage jet lag, limit evening screen use, ease seasonal depression and improve focus by syncing light, sleep and food with natural biological rhythms. Read the episode show notes at hubermanlab.com. Thank you to our sponsors AG1: https://drinkag1.com/huberman Eight Sleep: https://eightsleep.com/huberman ROKA: https://roka.com/huberman Timestamps (00:00) Samer Hattar (00:27) Light, Circadian Clock vs Solar Day, Sleep-Wake Cycle (03:20) Eyes, Photoreceptors & Light Entrainment, Blindness, Sleep (06:13) Morning Light, Artificial Lights, Tool: Morning Sunlight Exposure (08:28) Jet Lag Without Traveling, Sleep Issues, Screens, Staying Indoors (09:19) Sponsors: Eight Sleep & ROKA (12:14) Chronotypes, Intrinsic Circadian Rhythms (14:06) Afternoon & Evening Light, Tools: Dimming Lights, Reduce Screen Use (15:57) Light Exposure & Effects on Stress, Mood & Learning, Tripartite Model (19:30) Light & Appetite, Tool: Regular Meal Times (22:39) Using Light to Improve Sleep, Mood & Mental Health (24:20) Sponsor: AG1 (25:42) Jet Lag, Tools: Temperature Minimum; Eat on Local Schedule, Avoid Mismatched Light Exposure (29:15) Sleep Issues, Light-Dark Cycle (30:50) Seasonality, Seasonal Depression; Daylight Savings Time (34:07) Acknowledgements Disclaimer & Disclosures Learn more about your ad choices. Visit megaphone.fm/adchoices

My guest is Dr. Sergiu Pașca, MD, professor of psychiatry and behavioral sciences at Stanford University. We discuss the biology and genetics of autism, why autism diagnoses are increasing and recent progress in using stem cells to understand and treat profound autism and other brain disorders. Dr. Pașca explains “organoids and assembloids”—human stem cell–derived tools he pioneered to study, treat and cure complex brain diseases. We also discuss ethical and safety issues with using gene editing and stem cells in humans. Read the episode show notes at hubermanlab.com. Thank you to our sponsors AG1: https://drinkag1.com/huberman David: https://davidprotein.com/huberman Helix: https://helixsleep.com/huberman BetterHelp: https://betterhelp.com/huberman Function: https://functionhealth.com/huberman Timestamps (00:00) Sergiu Pașca (02:08) Autism Spectrum Disorder, Incidence, Genetics (07:16) Is Autism More Common in Males? (09:35) Sponsors: David & Helix Sleep (11:56) Eye Contact in Babies, Fever; Proposed Causes of Autism; Genes (18:48) Genetic or Idiopathic Autism Diagnoses, Timothy Syndrome (21:37) Rise in Autism Diagnoses (26:46) Cause, Correlation & Neurological Disease; Schizophrenia, Do Vaccines Cause Autism? (31:34) Global Increase in Autism; Gene Therapy, CRISPR, Follistatin (41:05) Sponsors: AG1 & BetterHelp (43:41) Stem Cells, Ethics, Yamanaka Factors, Human Stem Cell Models (52:03) Umbilical Stem Cells; Stem Cell Injections & Dangers, Autistic Kids (59:30) Organoids, Modeling Brain Development, Intrinsic Development Timer (1:12:22) Assembloids, Brain Cell Migration & Circuit Formation, Self-Organization (1:21:22) Four-Part Assembloid, Sensory Assembloid, Pain Conditions (1:25:45) Sponsor: Function (1:27:33) Future Medical Therapies, Cell Banking, Immortalize Tissues, Rejuvenate Cells (1:34:56) Assembloids & Ethics, Importance of Nomenclature, Science Collaboration & Self-Correction (1:45:38) Cell Transplantation & Ethics, Timing (1:55:05) Genetic Testing for Parents, Genetic Penetrance (2:02:36) Assembloids, Timothy Syndrome, Epilepsy, Schizophrenia, Dystonia (2:14:30) Scientific Career, Walking, Art, Medical School (2:20:44) Zero-Cost Support, YouTube, Spotify & Apple Follow & Reviews, Sponsors, YouTube Feedback, Protocols Book, Social Media, Neural Network Newsletter Disclaimer & Disclosures Learn more about your ad choices. Visit megaphone.fm/adchoices