The Diary of a CEOLeading Neuroscientist: Stress Leaks Through Skin, Is Contagious, Gives You Belly Fat! Dr Tara Swart
CHAPTERS
- 0:00 – 6:00
Visualization, Brain Potential, and Dr. Tara Swart’s Mission
The episode opens with a striking study on weightlifters gaining muscle purely through visualization, framing the brain’s hidden potential. Stephen introduces Dr. Tara Swart and positions the conversation around mental resilience, human potential, and confronting outdated beliefs about the brain.
- •Visualization alone increased muscle mass by 13% in a weightlifting experiment, illustrating mind-over-matter.
- •Swart’s background: neuroscientist, former medical doctor, psychiatrist, executive advisor, and author.
- •Core theme: most people dramatically underestimate the brain’s capacity to change throughout life.
- 6:00 – 21:00
Brain–Body Connection and Stress as a Killer
Swart recounts working with high-performing executives who treated their bodies as mere vehicles for their brains. She details how chronic stress, via cortisol and inflammation, contributed to sudden heart attacks—even in the absence of typical cardiac risk factors.
- •Executives ignored basic physical needs—sleep, diet, hydration, movement—while being paid to use their brains.
- •Cortisol follows a 24-hour rhythm but chronic elevation signals an ongoing survival threat to the brain.
- •Chronic high cortisol causes systemic inflammation, particularly in vascular and cardiac systems, driving stress-induced heart attacks.
- •Swart refused to address physical health in isolation from mental and emotional drivers.
- 21:00 – 35:00
Stress, Subjectivity, and Contagion via Hormones
The discussion defines stress as a subjective overload and distinguishes adaptive spikes from harmful chronic elevation. Swart then explains how hormones like sex steroids and cortisol leak from sweat, synchronizing menstrual cycles and spreading stress physiologically—especially from leaders down organizations.
- •Stress is when perceived physical, mental, emotional, or spiritual load exceeds capacity—highly subjective.
- •Adaptive stress spikes are healthy; chronic, unrelenting stress is damaging.
- •Menstrual synchrony among women co-living/working is driven by hormone particles in sweat affecting others’ skin.
- •The alpha female’s cycle tends to lead; hierarchy matters similarly with cortisol.
- •Leaders’ cortisol leaks into others, meaning suppressed stress is still physiologically transmitted.
- 35:00 – 47:00
Oxytocin, Eye Contact, and Building Emotional Resonance
Swart unpacks how bonding and trust are built through eye contact, touch, and shared emotional experiences. She describes mother–infant eye contact, the power of right-eye-to-left-eye gaze, and practical bonding behaviors that raise oxytocin in daily life and even dating.
- •Mother–infant right-eye-to-left-eye gaze wires emotional understanding via the amygdala.
- •Right-eye to left-eye eye contact is the most bonding configuration in adult interactions.
- •Physical touch (handshakes with two hands, hugs, kisses), laughter, and shared intense experiences raise oxytocin.
- •Simple self-care like warm baths and massage can boost oxytocin and increase openness to bonding.
- 47:00 – 59:00
From Cave Tribes to Corporate Stress: Cortisol, Belly Fat, and Leadership
Using evolutionary stories, Swart explains why hormones evolved to synchronize reproduction and buffer famine via abdominal fat. She links this to modern office life, where leaders’ leaked cortisol both stresses their teams and drives hard-to-shift belly fat, challenging organizations to reconsider promotions and culture.
- •In ancestral caves, synchronized fertility among women maximized chances the alpha male’s genes survived.
- •Sex hormones and cortisol radiate in a “halo” around people, impacting those nearby.
- •Cortisol promotes abdominal fat as a survival fuel store; under chronic modern stress it becomes stubborn belly fat.
- •Executives often can’t lose midsection fat despite diet/exercise until cortisol is reduced.
- •Leadership stress directly shapes team physiology; promoting a highly stressed leader amplifies organizational harm.
- 59:00 – 1:12:00
Recognizing and Reducing Chronic Cortisol
Swart offers a checklist of cortisol symptoms—sleep disruption, gut issues, irritability, skin problems, snapping at family—and prescribes practical ways to offload stress. Her focus is on physically and psychologically getting cortisol and negative thought loops out of the system.
- •Key signs: disturbed sleep, stubborn belly fat, reflux/indigestion, irritability, snapping at loved ones, dry/problem skin.
- •Cortisol is pro-inflammatory and drying; skin is both a physical and psychological boundary where stress shows up.
- •Two main interventions: aerobic exercise to literally sweat out excess cortisol, and journaling or talking to externalize stressful thoughts.
- •Goal: remove cortisol and negative cognitions from the brain–body loop rather than merely suppressing them.
- 1:12:00 – 1:27:00
Sleep, Glymphatic Cleansing, and the Art of Side-Sleeping
The conversation shifts to sleep as a critical brain function, not a luxury. Swart explains the glymphatic system that actively flushes neurotoxic waste at night, why most adults need about eight hours of sleep, and how side sleeping and consistent sleep windows enhance brain health.
- •Sleep consolidates memory, processes emotions, and regenerates cells—but new research highlights brain ‘cleaning’.
- •The glymphatic system uses glial-cell-linked channels and fluid jets to clear tau, amyloid, and other waste.
- •This flushing takes 7–8 hours of real sleep; population ideal is about 8h15, with >9h linked to low mood.
- •Side-sleeping is best for glymphatic flow; special pillows can train habitual side sleeping.
- •When awake at night, turning onto one’s side may support whatever cleansing is possible.
- 1:27:00 – 1:47:00
Co-sleeping, Oxytocin, and Relationship Resilience
Swart argues strongly for couples sleeping together as both an evolutionary and emotional imperative. She describes co-sleeping’s roots in warmth and safety, warns about the relational cost of ‘sleep divorce,’ and shares HRV data showing kisses and cuddles as measurable resilience boosters.
- •Humans evolved to co-sleep in groups for warmth and protection, increasing oxytocin and tribal belonging.
- •Side-sleeping on the left likely protected vital organs like the heart while keeping dominant arm free.
- •Separate bedrooms can erode bonding; Swart would avoid it except in temporary special cases (e.g., newborns).
- •HRV studies show spikes in resilience when partners share affectionate moments, even if one is asleep.
- •We are not wired to survive alone; co-sleeping is now emotionally and spiritually protective, not just physical.
- 1:47:00 – 2:06:00
Intuition, Gut–Brain Axis, and Embodied Wisdom
Swart demystifies intuition as deeply stored experience rather than magic. She explains how learning and wisdom are pushed from the cortex into limbic system, brain stem, spinal cord, and gut neurons, making “gut instinct” a genuine neural phenomenon shaped by past experience.
- •Intuition is the unconscious pattern recognition of experiences you can’t explicitly recall but are neurologically stored.
- •Hebbian learning (“neurons that fire together wire together”) embeds strong early lessons deeply in the nervous system.
- •Gut, heart, and organs are innervated; gut neurons participate in intuitive feelings and early warning signals.
- •Intuitive people often sense illness and emotional shifts earlier than highly suppressed or overstressed individuals.
- •Men often demand scientific explanation before trusting intuition; women may be more open to accepting it as valid.
- 2:06:00 – 2:20:00
Post-Pandemic Spiritual and Mental Health Crisis
Swart outlines how the pandemic catalyzed unprecedented stress, loss, and isolation across all ages, but society has barely addressed the psychological aftermath. She contrasts modern short-term thinking with indigenous practices of planning seven generations ahead, and positions the current moment as both crisis and potential spiritual revolution.
- •Pandemic created health anxiety, uncertainty, grief, and developmental disruptions from newborns to elders.
- •Little collective processing has been done; people are unaware how changed they are by those years.
- •First Americans considered impacts seven generations ahead when making decisions; we often don’t look one generation ahead.
- •Emerging evidence: nature exposure, purpose beyond self, and creativity are powerful buffers for mental and physical health.
- •Swart sees a chance for a spiritual revolution—returning to timeless practices rather than inventing new fixes.
- 2:20:00 – 2:46:00
Nature, Neuroaesthetics, and Purpose Beyond Self
The discussion dives into how beauty, art, and nature regulate the nervous system. Swart introduces neuroaesthetics—how regular engagement with beauty and creativity supports longevity and mental health—and frames service to others as a deep evolutionary need to feel valuable to the tribe.
- •Time in nature measurably improves physical health, mental health, and longevity.
- •Neuroaesthetics/neuroarts: weekly creative or aesthetic activities (music, dance, novels, theatre, nature, flowers, sensory richness) benefit brain and body.
- •Appreciating beauty signals safety to the nervous system—only when not in immediate survival mode can we savor aesthetics.
- •Humans evolved needing to be useful to the tribe; serving others meets deep needs not satisfied by self-focused goals.
- •Simple acts—helping a neighbor, sharing knowledge, calling a friend—can be powerful sources of meaning and protection against despair.
- 2:46:00 – 3:06:00
Social Media, Pornography, and Erosion of Empathy
Swart and Stephen examine how screens, social media, and pornography have altered intimacy, expectations, and empathy. She describes distorted ideals of women, transactional dating norms, and how excessive online interaction without in-person contact harms social comfort, empathy, and body image—particularly in teens.
- •Pornography warps expectations of women’s appearance, behavior, and sexual boundaries, fueling disconnection and entitlement.
- •Dating apps plus porn encourage viewing others as disposable and transactional rather than as whole people.
- •Excessive online-only socializing reduces empathy and social ease; in-person time is protective even if digital use is high.
- •Teen studies show strong links between heavy online time, especially image-based, and body dysmorphia.
- •Deliberately limiting screens, curating relationships, and reclaiming deep face-to-face connection are crucial in a lonely era.
- 3:06:00 – 3:18:00
Social Contagion, Tribe Curation, and Psychological Level
Swart explains social contagion: we unconsciously mirror the behaviors and life outcomes of our social group. While not advocating abandoning struggling friends, she stresses the importance of surrounding yourself with people who are growing, kind, and emotionally aware because we meet others at our level of evolution—and our level of wounding.
- •If someone in your social group divorces or is obese, your own risk of the same rises statistically.
- •The concern is less about circumstances and more about shared attitudes and norms.
- •You tend to meet and stay with people at a similar psychological development level.
- •You also connect at the level of psychological wounds; unresolved trauma often attracts complimentary dysfunctions.
- •Intentionally choosing a “circle of trust” that challenges and supports growth is a foundational mental health strategy.
- 3:18:00 – 3:46:00
Neuroplasticity Explained: Mechanisms, Window of Change, and Limits
Swart traces how neuroscience moved from believing the adult brain was fixed to understanding neuroplasticity. She defines myelination, synaptic change, and neurogenesis as three mechanisms of brain change, and clarifies that adults can significantly upgrade executive functions—emotion regulation, flexible thinking, bias overriding—through intense, sustained learning and habit change.
- •Earlier medicine taught that once physical growth stopped, the brain was set; neuroplasticity overturned this.
- •Brain actively grows and changes until ~25; from 25–65 it can plateau unless pushed by new challenges.
- •Myelination: fatty coating speeds frequently used neural pathways, turning skills into near-superpowers.
- •Synaptic connectivity: existing neurons form new connections through effortful learning—most adult change happens here.
- •Neurogenesis: new neurons form mainly around the hippocampus; driven by BDNF, aerobic exercise, and dark-skinned foods.
- •Intense learning like languages or instruments yields “global benefits” in executive functions, not just the specific skill.
- 3:46:00 – 4:25:00
Changing Deep Patterns: Awareness, Consequences, Practice, Accountability
Swart walks through a 4-part roadmap for changing entrenched patterns—like overthinking, self-sabotaging relationships, people-pleasing, or chronic negativity. She illustrates with an example of someone repeatedly dating unavailable partners, showing how to surface hidden beliefs about self-worth and deliberately practice new choices.
- •Step 1: Raised awareness—spot the pattern and the deeper belief (e.g., ‘I don’t deserve someone of my own’). This is 50% of the battle.
- •Step 2: Focused attention—map when it shows up across life and link decisions to painful consequences.
- •Step 3: Deliberate practice—rehearse and then implement alternative responses (e.g., saying no to attached partners), gradually strengthening a new neural pathway.
- •Step 4: Accountability—external support (friends, therapists, coaches, visual/action boards) helps you persist through difficulty.
- •Some trauma-linked patterns are very deeply wired; while not everything may be ‘fixed,’ significant change is usually possible.
- 4:25:00 – 4:56:00
Generational Trauma, Epigenetics, and Pregnancy Stress
Swart distinguishes generational trauma (psychological spillover from historic oppression) from epigenetic or intergenerational trauma (changes in gene expression from environmental stressors like famine or the Holocaust). She explains how parental stress—especially maternal stress during pregnancy—can prime children’s stress responses, while emphasizing this is about awareness and mitigation, not blame.
- •Generational trauma: collective historical harms to groups (slavery, colonization) create enduring feelings of marginalization.
- •Epigenetics: experiences don’t change DNA sequence but alter which genes are switched on/off (phenotype).
- •Studies of Holocaust survivors and Dutch famine show stress effects persisting over at least three generations.
- •You inherit not your parents’ birth genes, but their gene expression at conception plus in-womb environment.
- •Maternal cortisol crosses the placenta; high pregnancy stress can predispose children to anxiety or low stress resilience.
- •Parents can actively use neuroplasticity tools—meditation, emotional education, supportive environments—to buffer and reshape these inherited vulnerabilities.
- 4:56:00 – 5:18:00
Grief, Emotional Avoidance, and the Need to ‘Go to the Bottom’
Swart reflects on grief—from breakups to death—as an overwhelming force that must be fully processed rather than bypassed. Drawing on her own divorce, she argues that people must allow themselves to descend into and work through the full spectrum of emotions, with gentle support, or risk unresolved pain resurfacing later.
- •Grief takes many forms: loss of self, relationship endings, bereavement; all deeply test identity and mortality.
- •We live in an emotionally avoidant culture that often encourages numbing (overwork, partying) instead of feeling.
- •Swart believes true healing requires ‘going to the bottom of the hole’—processing all the emotions instead of glossing over them.
- •Supporters should avoid pushing advice and instead hold space, occasionally checking for signs of acceptance and integration.
- •Unprocessed grief often re-emerges later, even in productive outlets (books, caregiving) if personal emotions were never faced.
- 5:18:00 – 5:43:00
Neuroplasticity Mechanisms in Detail: Exercise, Food, and Learning
Returning to mechanisms, Swart ties neuroplasticity to practical levers: aerobic exercise and diet. She introduces BDNF, explains why dark-skinned foods help, and revisits that remarkable visualization study with weightlifters, reinforcing how thought and intention can have measurable physical effects.
- •Neurogenesis depends on BDNF (brain-derived neurotrophic factor); aerobic exercise and dark-skinned foods increase BDNF.
- •Dark-skinned foods: blueberries over strawberries, black beans over white, purple sprouting broccoli, dark chocolate, good coffee.
- •Regular aerobic exercise yields ~13–14% turnover of embryonic-to-mature neurons; starting after inactivity can push ~30%.
- •Visualization study: group imagining finger/elbow weightlifting for two weeks gained 13% muscle vs 40% in actual lifters.
- •Thoughts and focused mental rehearsal can drive real physical adaptation, especially when combined with action.
- 5:43:00 – 5:56:00
Conditions for Change: Lifestyle Foundations and Fasting
Swart recaps the biological preconditions for effective neuroplasticity: sleep, movement, nutrition, hydration, and stress management. She then describes time-restricted eating and intermittent fasting as advanced tools that help regulate blood sugar and support brain health—but only once the basics are in place.
- •Foundations: ~8 hours sleep, regular sleep/wake times, non-sedentary lifestyle, plant-rich varied diet (~30 plants/week), hydration, and stress regulation.
- •Too much high-intensity exercise spikes cortisol; moderate aerobic movement is often better for brain health.
- •Time-restricted eating (e.g., 8–8, or 12–8 windows) can regulate blood sugar and act as a mild hormetic stressor that builds resilience.
- •Fasting helps only if baseline health behaviors are solid; otherwise it’s just additional stress.
- •Cognitive challenges (languages, DJing, instruments, travel, new routes, unfamiliar media) are necessary for higher-level neuroplasticity.
- 5:56:00 – 6:16:00
Self-Esteem, Affirmations, and Language as Brain Programming
Swart critiques shallow affirmations and instead promotes precise self-talk that addresses genuine underlying needs, like safety. She and Stephen explore how everyday phrases (‘I need coffee’, ‘I can’t exercise’) encode disempowering beliefs, and how deliberately rephrasing them changes neural wiring and agency.
- •Effective affirmations counter specific recurring negative thoughts with believable, empowering alternatives.
- •Saying “I’m safe” can be more regulating than “I’m beautiful” if the core issue is fear or insecurity.
- •Language repetition drives neuroplasticity; the brain believes whatever is rehearsed more often.
- •Framing (‘I need coffee’ vs ‘I’d like a coffee’ or ‘I’m treating myself’) shifts from dependency to choice.
- •Similarly, ‘I don’t have time’ vs ‘I’m prioritizing other things’ preserves agency and reduces victimhood.
- 6:16:00 – 6:51:00
Manifestation as a Brain Process, Not Magic
Swart redefines manifestation in neuroscientific terms: your brain, not the universe, is the source. She explains how clear intention, sensory-rich visualization, and aligned behavior (especially becoming the person who deserves what you want) drive outcomes, using ideal-partner lists and career examples.
- •Swart studied Law of Attraction concepts and mapped them to cognitive science; no external magic is required.
- •Vision boards become ‘action boards’: visual reminders that still require real-world effort.
- •Manifesting a partner: identify desired traits, then ensure you embody those same qualities and values.
- •We tend to get, in relationships and work, what we can genuinely offer over time, not what we merely demand.
- •Focusing solely on what you want (pay rises, perfect partners) without focusing on what you bring keeps you stuck and stressed.
- 6:51:00 – 7:11:00
Neurodiversity, Diagnosis, and Evolutionary Adaptation
Briefly turning to neurodiversity, Swart outlines autism, ADHD, dyslexia, and related conditions as variations from a ‘typical’ brain. She suggests that higher diagnosis rates reflect both better detection and possible adaptations to a hyper-stimulating, tech-saturated world.
- •Neurodiversity includes ADHD, autism spectrum, dyslexia, dyscalculia, etc.—different, not lesser, brain wiring.
- •Many older generations likely had undiagnosed ADHD/other traits, visible in life histories (multiple jobs, unstable relationships).
- •Some propose autism as an evolutionary adaptation to handle modern complexity and information flow.
- •Dyslexia may have always existed but only became salient with literacy-focused education systems.
- •Ancient cultures normalized variations in gender and sexual identity; modern society is only now catching up conceptually.
- 7:11:00 – 7:30:00
Indigenous Wisdom, Humming, and Parasympathetic Regulation
Swart previews her upcoming podcast season on indigenous wisdom, sharing small practices like humming and chanting that appear in diverse traditions. While mechanisms aren’t fully mapped, she links them to parasympathetic activation and creativity, echoing breathing experts’ claims about humming’s benefits.
- •Humming and chanting are ancient, cross-cultural practices used in ritual, healing, and creativity.
- •These vocalizations likely stimulate the vagus nerve and parasympathetic system, calming the body.
- •Practices can be simple, discreet (e.g., low humming on public transport), and require no special tools.
- •Indigenous systems like Ayurveda and First American traditions integrated such practices long before neuroscience.
- •Swart is mining these traditions for simple, modern-friendly tools to regulate stress and deepen presence.
- 7:30:00 – 7:56:00
Psychological Priming of Aging and Defying ‘Old’ Scripts
Swart describes a study where people in their 80s lived for a week as if they were 20 years younger, leading to measurable improvements in posture, coordination, and perceived age. She adds a story about her own eyesight improving after refusing the narrative of age-related decline, highlighting how expectations shape physiology.
- •Octogenarian study: group living in 1960s-style environments (‘as if 60’) became taller, more coordinated, and looked younger to strangers.
- •A second group only reminisced and showed smaller, but positive, changes; controls did not improve.
- •Florida word-priming study: young students walked more slowly after seeing ‘retirement’ words, proving language can instantly alter behavior.
- •Swart’s optician predicted she’d need reading glasses; she mentally rejected it and refused to adjust behavior (e.g., moving texts farther away).
- •A year later, her eyesight tested better, illustrating how beliefs about aging can modify functional outcomes via behavior and brain plasticity.
- 7:56:00
Your Untapped Brain Potential and the First Practical Step
In closing, Swart reiterates that most adults are far from their brain’s potential and can meaningfully reshape who they are. She offers a concrete first step—clarity, visualization, and gratitude—to move the brain from fear to trust, opening the gateway for neuroplastic change.
- •You are not a fixed entity; your brain can support a far ‘more amazing life’ than you currently experience.
- •Step one: get very clear on what you want (traits, habits, life conditions).
- •Spend at least five minutes fully visualizing those goals as already true—seeing, hearing, feeling them in your body.
- •Then practice genuine gratitude for those envisioned realities, shifting the brain from chronic fear to trust.
- •This mental state makes behavioral change, neuroplastic rewiring, and aligned action significantly more likely.
