Dr. Brennan Spiegel (Cedars-Sinai) and Dr. Lachlan Kent explore how gravity shapes not only our bodies but our minds. Through the lens of Cathy Freeman’s gold-medal run, they discuss mental gravity — the feeling of emotional “weight” and lightness that defines human experience.
From Einstein’s relativity to embodied cognition and Cedars-Sinai’s virtual-reality therapy, they connect physics, psychology, and physiology to show how alignment with gravity may be the key to wellbeing. Topics include depression as a “mental gravity well,” glucose and perception, VR and levity, and how mindfulness, diet, and physical balance can help us stay buoyant in heavy times.
Key themes:
Mental Gravity: The experience of emotional and cognitive “weight,” shaped by our alignment with the physical world’s gravitational pull.
Embodied Cognition: How bodily states and forces (like gravity, glucose, or posture) shape perception and thought.Gravity Intolerance: A unifying framework for disorders where physical and mental balance are disrupted.
Mind over Matter: Using imagery, mindfulness, and movement to generate upward momentum and emotional lightness.Timecodes:
00:00 – 01:30 | Welcome to The Gravity DoctorsIntroducing Brennan and Lachlan; overview of physical and mental gravity.
01:30 – 03:50 | The Cathy Freeman StoryHow Cathy transcended the “weight of expectation” to run with joy and lightness — an example of mental gravity at its best.
03:50 – 06:00 | The Weight of EmotionExploring why positive emotions feel light and negative emotions feel heavy — from embodied metaphors to physical postures of depression.
06:00 – 08:10 | Embodied Cognition and Glucose StudiesBrennan cites research showing blood-glucose levels alter perception of hill steepness — a literal bridge between physiology and perception.
08:10 – 11:00 | The Birth of the Theory of Mental GravityLachlan recalls his “aha” moment linking Einstein’s general relativity lecture on black holes to psychological depression — both described using the same language of heaviness, collapse, and isolation.
11:00 – 12:40 | Gravity Wells, Black Holes, and RecoveryComparing mental “gravity wells” to depression — but unlike black holes, people can pull themselves out.
12:40 – 16:20 | Champagne, Joy, and the Physics of EmotionWhy celebration rituals mirror gravitational metaphors — bubbles rising, buoyancy, and the inevitable “come-down.”
16:20 – 19:30 | Virtual Reality as a Gravity-Hacking ToolCedars-Sinai research: VR experiences that simulate floating or flying reduce pain, anxiety, and inflammation — measurable physiological effects of simulated levity.
19:30 – 22:00 | Mindfulness and Mental ImageryUsing mental imagery and meditation to reshape the brain-body landscape and foster feelings of lightness and alignment.
22:00 – 25:50 | The Continuum of Mind and BodyWhy mind and body aren’t separate but part of one continuous system — like a cross-country landscape shifting seamlessly from desert to sea.
25:50 – 28:30 | Gravity Intolerance and Health ResilienceReframing conditions like IBS, POTS, and anxiety as variations of gravity intolerance; maintaining physical and mental balance as the essence of wellbeing.
28:30 – 30:00 | Everyday Applications & Closing ReflectionsFrom mindfulness to serotonin-rich diets and time in nature — practical tools to stay buoyant.
Final reflections on finding balance between empowerment and medical treatment.
Want to discover your 'Gravitype'? Visit The Gravity Doctors website:https://thegravitydoctors.com/
Order Brennan's book "Pull" to learn more about how gravity shapes your health in both body and mind via his personal personal website: https://www.brennanspiegelmd.com/pull
Visit Lachlan's website to learn more about his work in mental gravity: https://lachlankent.au/
Music by ALLIRA and Visceral Sound - https://www.youtube.com/@ALLIRAmusic
Recording at JTB Studio by David Iskandaryan.