The FitMind Podcast: Mental Fitness, Neuroscience & Psychology

FitMind founder Liam McClintock returns to the FitMind Podcast after several years of intensive meditation and monastic training to explore how his understanding of mental fitness has evolved, what he learned from life as a Buddhist monk, and the practices he now considers most effective for creating lasting change in the mind.
Liam explains the distinction between mental health and mental fitness, why our brains are evolutionarily biased toward worry and dissatisfaction, and how predictive processing may help explain the way we construct our experience of reality. He connects modern neuroscience with the Buddhist principle of dependent origination and explores how meta-awareness can help us step out of habitual thoughts, emotions, and narratives.
The conversation also explores the practices at the center of Liam's current approach: releasing, loving-kindness meditation, and the 4Rs - Recognize, Release, Relish, and Remain. Liam and Josh discuss the difference between temporary "fit states" and lasting "fit traits," jhana and the neuroscience of internally generated bliss, and how developing deeper sources of well-being may loosen our dependence on external rewards.
Liam also reflects on his time with the Shipibo in the Amazon, what he learned from his teacher Bhante Vimalaramsi, how to create a healthier "mental diet," and why forgiveness may be one of the most powerful mental reps we can practice. The episode closes with Liam sharing his vision for the next chapter of FitMind and building a community around deeper meditation practice.
Topics include:
Mental fitness, evolutionary negativity bias, and the predictive mind
Predictive processing, dependent origination, and meta-awareness
Fit states vs. fit traits and creating lasting inner change
Releasing, metta meditation, and the 4Rs
Jhana, internally generated bliss, and the brain's reward system
Lessons from the Shipibo and Bhante Vimalaramsi
Mental diet, forgiveness, and the future of FitMind
A wide-ranging conversation for anyone interested in meditation, mental fitness, neuroscience, consciousness, Buddhist practice, or developing a more lasting form of well-being.
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Liam's book, Fit Mind, is now available! You can pick up a copy and learn more at fitmind.org/book.
FitMind Neuroscience-Based App: http://bit.ly/afitmind
Website: www.fitmind.org/
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Timestamps
0:00 | Predictive Processing, Meditation & the Future of FitMind
1:35 | Introduction: Liam McClintock Returns
2:49 | Welcome Back to the FitMind Podcast
3:19 | From Finance to Meditation & Buddhist Monkhood
7:41 | Mental Health vs. Mental Fitness
11:26 | Why the Brain Is Wired for Negativity
14:10 | Predictive Processing & the Predictive Mind
15:57 | Dependent Origination, Narratives & Meta-Awareness
33:58 | Why Success and Wealth Don't Create Happiness
38:45 | Fit States vs. Lasting Fit Traits
42:23 | Liam's Current Approach to Meditation
43:29 | Releasing, Metta & the 4Rs
50:54 | Jhana & the Neuroscience of Bliss
56:23 | Internal Bliss & Our Dependence on External Rewards
1:00:03 | Lessons From the Shipibo in the Amazon
1:06:35 | Monkhood & Training With Bhante Vimalaramsi
1:13:41 | Building a Healthier Mental Diet
1:19:08 | A 60-Second Mental Rep: Forgiveness
1:20:37 | Fit Mind & Making the Practice Part of Your Life
1:26:08 | The Future of FitMind, Community & Retreats

Clinical neuropsychologist Dr. Aldrich Chan joins the FitMind Podcast to explore the intersection of Taoist philosophy, neuroscience, and evolutionary psychology, and what these fields can teach us about our growing sense of disconnection from nature.
Drawing from his book 7 Principles of Nature: How We Strayed and How We Return, Aldrich explains his theory of separation, alienation, and discord, and how capacities that helped humans survive—such as abstract thinking, mental time travel, and a strong sense of self—may also contribute to some of the challenges of modern life.
The conversation explores the default mode network and our perception of time, the neuroscience of meditation and self-transcendence, and the Taoist idea of our "original nature." Aldrich also discusses nothingness as a space of possibility rather than a void, the relationship between wu wei and flow states, how to work more skillfully with stress and uncertainty, and why play and spontaneity remain important throughout adulthood.
Topics include:
The intersection of Taoism, neuroscience, and evolutionary psychology
Separation, alienation, and modern evolutionary mismatch
The default mode network, thinking, and our perception of time
Meditation, self-transcendence, and "original nature"
Taoist nothingness and creating space for difficult experiences
Wu wei, Tai Chi, and the neuroscience of flow
Eustress and the difference between productive and overwhelming stress
Working with uncertainty through curiosity rather than threat
Why play, spontaneity, and intuition matter for well-being
A wide-ranging conversation for anyone interested in meditation, consciousness, neuroscience, Taoist philosophy, or how we might live in greater alignment with our minds, bodies, and the natural world.
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Liam's book, Fit Mind, is now available! You can pick up a copy and learn more at fitmind.org/book.
FitMind Neuroscience-Based App: http://bit.ly/afitmind
Website: www.fitmind.org
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Timestamps
0:00 | Original Nature, Selflessness & Consciousness
0:51 | Introduction to Dr. Aldrich Chan
1:56 | From Neuroscience to Taoism
8:18 | The SAD Theory: Separation, Alienation & Discord
15:38 | Evolutionary Mismatch & Modern Isolation
19:46 | The Default Mode Network, Time & Meditation
24:23 | The Neuroscience of "Original Nature"
32:13 | Self-Transcendence Without Losing Function
34:33 | Meditation vs. Psychedelic States
37:04 | Taoist Nothingness & the Uncarved Wood
42:08 | Creating Space for Difficult Emotions
44:14 | Tai Chi, Wu Wei & Flow States
49:54 | Eustress & Dynamic Equilibrium
57:52 | Dr. Chan's Stillness Meditation Practice
1:00:30 | How to Work With Uncertainty
1:06:25 | Reframing Mental Health & Evolutionary Mismatch
1:10:07 | Why Play Matters
1:12:48 | The Seven Principles as Invitations
1:14:24 | Dr. Chan's Book & Where to Find His Work

Neuroscientist Idil Sezer joins the FitMind Podcast to explore what meditation changes beyond the brain. She explains how meditation may influence attention, emotional regulation, pain, brain–heart communication, and our fundamental sense of self.
The conversation also explores the difference between long-term and advanced meditators, unusual cardiovascular patterns observed during deep meditation, and how virtual reality may help researchers study embodiment, nondual awareness, and the boundaries of the self.
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Liam's book, Fit Mind, is now available! You can pick up a copy and learn more at fitmind.org/book.
FitMind Neuroscience-Based App: http://bit.ly/afitmind
Website: www.fitmind.org
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Show Notes
0:00 | Introducing Idil Sezer, PhD
2:11 | From Clinical Neuroscience to Meditation Research
3:58 | Why Meditation Is a Unique Tool for Training the Mind
5:21 | Meditation Beyond Relaxation and Performance
7:27 | What Different Meditation Traditions Change in the Brain
10:03 | The Nervous System and Meditation's Effects on the Heart
11:01 | Cardiac Spectral Peaks in Advanced Meditators
16:54 | Brain–Heart Communication and Holistic Neuroscience
18:13 | Long-Term vs. Advanced Meditators
20:25 | Mental Health, Pain Relief, and Neuroprotection
22:09 | Meditation, Gut Health, Epigenetics, and Cellular Memory
28:23 | Predicting Who Responds to VR Anxiety Interventions
38:17 | Using Virtual Reality to Investigate the Sense of Self
44:21 | Nondual Awareness and the Future of Meditation Research
49:22 | Finding the Meditation Practice That Works for You

Mindfulness, Medicine & the Biology of Stress explores how meditation can change our relationship to stress, support the body's natural healing systems, and help us live with more presence, compassion, and ease.
In this episode of The FitMind Podcast, we sit down with Craig Hassed, MD, physician, educator, and mindfulness expert, to examine the science and practice of mind-body medicine. Drawing from decades of clinical work, teaching, and contemplative practice, Craig explains how chronic stress creates physiological wear and tear in the body, known as allostatic load, and why learning to return to the present moment can have effects far beyond feeling calmer.
The conversation explores how mindfulness may influence inflammation, immune function, gene expression, and biological aging, including research on telomeres and the body's stress circuitry. Craig also discusses why informal mindfulness in daily life may be just as important as formal meditation practice, especially when we are caught in worry, pressure, or mental projections about the future.
Topics include:
How mindfulness became part of the medical curriculum at Monash University
Why chronic stress creates wear and tear on the body
What allostatic load means for health and aging
How meditation may affect inflammation, immunity, and gene expression
The relationship between mindfulness and telomeres
Why presence can improve focus, performance, and flow
The difference between empathy, empathic distress, and compassion
Why compassion may protect against burnout
How mindfulness can support doctors, patients, students, and everyday life
The question of consciousness and whether it may be more fundamental than matter
A practical and wide-ranging conversation for anyone interested in the medical science of mindfulness, the biology of stress, or how contemplative practice can support resilience, compassion, and human flourishing.
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Liam's book, Fit Mind, is now available! You can pick up a copy and learn more at fitmind.org/book.
FitMind Neuroscience-Based App: http://bit.ly/afitmind
Website: www.fitmind.org
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Show Notes
0:00 | Introduction to Dr. Craig Hassed
3:23 | Discovering meditation without a teacher
9:18 | Bringing mindfulness into clinical medicine
10:21 | Teaching mindfulness to medical students
15:10 | How chronic stress affects the body
15:56 | Understanding allostatic load
20:57 | Epigenetics, inflammation, and immune function
22:42 | Meditation, telomeres, and biological aging
26:17 | How much meditation is enough?
29:18 | Formal practice vs. mindfulness in daily life
31:17 | The growth of mindfulness research
36:54 | The ESSENCE model of health
38:56 | Choosing the right meditation practice
41:47 | How the mind creates unnecessary stress
45:21 | Mindfulness, performance, and flow states
51:21 | Mindfulness education and human flourishing
52:40 | Technology, isolation, and genuine connection
1:00:43 | Empathy, empathic distress, and compassion
1:01:42 | Why compassion may protect against burnout
1:06:16 | Is consciousness more fundamental than matter?
1:07:10 | Can consciousness be scientifically measured?
1:08:33 | Craig's daily practice and rapid-fire questions
1:09:15 | Final thoughts

Zen & the Science of Living Well with Robert Waldinger, MD explores what the longest-running study of adult life reveals about happiness, health, connection, and the many different ways a meaningful life can unfold.
In this episode of The FitMind Podcast, we sit down with Robert Waldinger, MD, psychiatrist, Zen teacher, and director of the Harvard Study of Adult Development, to examine what actually helps people thrive over the course of a lifetime. Drawing from more than eight decades of research, Robert explains why strong relationships are one of the clearest predictors of long-term health and happiness, and how loneliness can affect the body through chronic stress, inflammation, and nervous system dysregulation.
The conversation also explores the overlap between psychotherapy, lifespan research, and Zen practice. Robert discusses why there is no single formula for a good life, how the mind fills in the blanks when faced with uncertainty, and why equanimity is not emotional suppression, but a wiser relationship to reactivity.
Topics include:
How the Harvard Study of Adult Development tracks happiness across a lifetime
Why relationships are deeply linked to health and longevity
How loneliness can become a chronic stressor in the body
The difference between solitude and loneliness
What people most often regret near the end of life
How Zen and psychology both reveal the stories the mind creates
Practical ways to build "social fitness" in everyday life
A grounded, expansive conversation for anyone interested in the science of happiness, the health effects of connection, or how contemplative practice can help us live with more presence, meaning, and care.
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Liam's upcoming book, Fit Mind, is now available for preorder. You can learn more at fitmind.org/book.
FitMind Neuroscience-Based App: http://bit.ly/afitmind
Website: www.fitmind.org
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Show Notes
0:00 | Merging Zen, science, and psychotherapy
3:18 | Breaking the silence on personal spiritual practice
6:12 | Overview of the Harvard Study of Adult Development
9:53 | How chronic loneliness breaks down physical health
13:09 | Evolutionary biology of group connection and safety
15:10 | Many paths to a good life: unconventional contentment
19:17 | Vulnerability and the myth of the self-made man
21:35 | Research-backed strategies for building new friendships
24:23 | End-of-life regrets and sources of pride
26:08 | Resume values vs. eulogy values
28:02 | Noticing and transforming internal self-criticism
32:52 | The WISER model for slowing down social reactions
39:32 | Equanimity: feeling deeply without reactive explosion
42:11 | Subjective loneliness vs. the contentment of solitude
48:23 | Practical exercises: gratitude, subtraction, and nature
51:44 | Social fitness and the impact of digital habits
55:52 | The future of human connection in the age of AI
1:01:21 | Closing reflections and the upcoming book Nothing to Fix