Key Takeaways
- Our perception of time and "frame rate" is set by our visual system. Looking at things up close increases our frame rate and makes time seem to pass more slowly, while looking at distant or unpredictable things slows our frame rate.
- To adjust to jet lag, expose your eyes to bright light in the 2-3 hours after your "temperature minimum" (typically 2 hours before you normally wake up) to advance your circadian clock. Viewing light before your temperature minimum delays your clock.
- Psychedelics like psilocybin and MDMA are being studied for treating depression, PTSD, and other conditions. They may allow people to experience the full emotionality of past events while also gaining cognitive insights.
- Using a sauna or taking a warm bath 2 hours before bed can improve sleep by allowing your core body temperature to drop, which is necessary for falling asleep.
- Repeated exposure to the same stressor typically results in less adrenaline release over time as we habituate, unless the stressor remains psychologically stressful.
- Finding your passion involves reconnecting with feeling states of genuine interest and excitement you've experienced in the past, rather than just following external advice.
Introduction
This episode features the Q&A portion of a live event Andrew Huberman hosted at the Sydney Opera House in Australia. The event was part of a lecture series called "The Brain Body Contract." Huberman answers audience questions on a wide range of neuroscience and health topics, providing insights into circadian rhythms, psychedelics, stress, finding one's passion, and more.
Topics Discussed
The Power of Mindset on Stress (2:50)
Huberman discusses recent findings on how our mindset about stress impacts its physiological effects:
- Studies show that believing stress is enhancing vs. harmful actually changes how our body responds to it physiologically
- Learning about the potential benefits of stress can help shift our mindset and response
- What we believe about a phenomenon strongly impacts how it shapes our response
David Goggins: A Case Study in Resilience (5:23)
Huberman shares an anecdote about meeting David Goggins:
- Describes Goggins as genuinely intense and committed to his extreme lifestyle
- Admires how Goggins and others like Rick Rubin simply do what they believe is right without concern for others' opinions
Exploring Time Perception & Frame Rate (9:59)
Huberman explains how our visual system impacts our perception of time:
- Looking at things up close increases our "frame rate" and makes time seem to pass more slowly
- Viewing distant or unpredictable things slows our frame rate and makes time seem to pass more quickly
- Our level of autonomic arousal also impacts frame rate - higher arousal increases frame rate
- Activities like viewing aquariums can slow frame rate and be relaxing
Jet Lag Protocol: Adjusting to New Time Zones (18:20)
Huberman outlines his approach to managing jet lag:
- Determine your "temperature minimum" - typically 2 hours before you normally wake up
- Expose eyes to bright light 2-3 hours after temperature minimum to advance your clock
- Viewing light before temperature minimum delays your clock
- Eat on local schedule and get social interaction to help adjust
- Use red light in evenings to reduce cortisol and prepare for sleep
The Science of Neuroplasticity (26:44)
Huberman briefly touches on neuroplasticity:
- The brain remains plastic and capable of change throughout the lifespan
- Introspection and sensing into our experiences can tap into neuroplasticity
The Transformative Power of Psychedelics (26:49)
Huberman discusses the renewed scientific interest in psychedelics:
- Compounds like psilocybin, LSD, and MDMA are being studied for depression, PTSD, etc.
- Federal funding is now supporting psychedelic research at major institutions
- Psychedelics are no longer as associated with counterculture as in the past
Exploring Psilocybin & MDMA: Personal Experiences & Insights (29:26)
Huberman shares his experiences participating in clinical trials:
- Psilocybin journeys can be terrifying but often lead to valuable insights
- MDMA tends to be less scary and promotes self-empathy
- Psychedelics may allow experiencing full emotionality of past events while gaining cognitive insights
- Proper support and setting are crucial for safe, beneficial experiences
The Science of Sleep: How Temperature Affects It (36:12)
Huberman explains the relationship between temperature and sleep:
- Core body temperature needs to drop 1-3 degrees to fall asleep
- Sauna or warm bath 2 hours before bed can paradoxically help cool core temperature
- The brain's thermostat (medial preoptic area) works to cool core temp after external warming
- "Warm up to cool down to fall asleep, stay cool to stay asleep, warm up to wake up"
Understanding Stress Response & Habituation (39:38)
Huberman discusses how we adapt to repeated stressors:
- Typically less adrenaline is released with repeated exposure as we habituate
- The amygdala acts more as a novelty detector than pure threat detector
- If a stressor remains psychologically stressful, adrenaline release may increase over time
Personal Anecdotes (41:20)
Huberman shares some personal stories and observations:
- Describes an interesting fan interaction where someone just said "Hey Andrew" and walked away
- Discusses how he managed excess energy during delicate microsurgeries by tapping his foot
- Reflects on changing norms of formality between professors and students
Finding Your Passion: Advice for the Youth (47:00)
Huberman offers guidance on discovering one's passion:
- Passion is rooted in feeling states of genuine interest/excitement experienced in the past
- Introspect to remember or sense into what truly excites and interests you
- Use feedback from others as calibration points, not definitive direction
- Trust your unique wiring and what makes you say "yum" or "behold"
Conclusion
Huberman closes by thanking the audience and expressing appreciation for their interest in science. He encourages everyone to engage in introspection and to share the science-based protocols he discusses, emphasizing that he mostly curates existing research rather than developing novel approaches. Huberman expresses gratitude to the Sydney Opera House for hosting and reiterates the importance of scientific inquiry and understanding.