What's your Gravitype? Take the quiz to find out Ep 6

In this episode, Dr Brennan Spiegel (physician, gastroenterologist, and author of Pull) and Dr Lachlan Kent (cognitive scientist and founder of Mental Gravity) dive deep into gravity resilience and introduce listeners to the new Gravitype Quiz—a wellness tool that blends biomechanics, neuroscience, and psychology to help people understand their personal relationship with gravity.Together, Brennan and Lachlan take the quiz live on the show and compare results, unpacking the three pillars of biogravitational health: gravity fortitude, gravity sensing, and mental gravity. Along the way, they explore back pain, dizziness, cold exposure, resilience, interoception, emotional balance, and how experiences like roller coasters or elevators reveal something about your gravitational tendencies.You can try the full interactive quiz here:brennanspiegelmd.comvirtualmedicine.org/pullthegravitydoctors.com1. What Is a Gravitype?A personalised profile of gravity resilienceBased on the framework in Pull and grounded in emerging concepts in biogravitational medicineNot a diagnostic tool — currently evidence-informed and intended for education/wellnessGravity FortitudeMuscles, bones, pumps, and tubesCardiovascular and postural strengthBack pain, leg swelling, stair climbing, grip strengthGravity SensingInner ear, proprioception, vestibular functionBalance tests (like one-leg standing)Cold sensitivity, interoception, dizziness/vertigoMental GravityWeighted-down vs upliftedStress tolerance, emotional recovery, “flow” statesDual-continuum model of mental healthGrip strength as a predictor of longevityBMI and physical load on the spineOrthostatic light-headedness and blood pressure regulationInner-ear disorders (e.g., BPPV) and sensory hypersensitivityThe anterior insula as the “gravity conductor” of the body–mind symphonyThey answer questions on:Opening a jarClimbing stairsBack painLight-headednessBalanceCold toleranceEmotional reactivity and resilienceRoller coaster sensitivityPositive emotional absorption (flow)Each reflects personally on past injuries, thyroid health, yoga, meditation, diet, travel, and evolving gravitational resilience across their lives.Durable fortitudeNormosensitive sensingLifted mental gravityNotes how training (cold exposure, yoga, flying) reshaped Lachlan's sensitivity over time.Reflections on vertigo, cold intolerance, and emotional uplift as part of Brennan's profile.Both discuss how gravitypes can change with training, awareness, and targeted practices.Examples include:Down-regulating sensory overload (slow nasal breathing, longer exhales, box breathing)Strengthening the gravity fortitude system (movement, posture, reducing sitting time)Noticing “watch-outs” such as back pain, dizziness, or emotional ruminationLinks included in the show notes.00:00 — Welcome, origins of the gravitype01:30 — Gravity resilience basics03:00 — Gravity fortitude (muscles, tubes, pumps)06:45 — Mental gravity explained08:00 — Starting the quiz09:00 — Grip strength & longevity11:00 — Stair climbing & cardiovascular load12:00 — Back pain & evolution15:00 — Orthostatic dizziness & fainting18:00 — BMI, weight, and gravitational load20:00 — Leg swelling, pumps & tubes23:30 — Gravity sensing & vertigo25:00 — Balance tests (one-leg stance)26:30 — Cold sensitivity & nervous-system tuning29:30 — Interoception & the anterior insula33:00 — Stress, heaviness & mental gravity36:00 — Roller coasters, turbulence & fear responses38:00 — Emotional resilience and bouncing back41:00 — Flow states and uplift43:00 — Revealing their gravitypes46:30 — What their results mean48:00 — Final reflections & where to take the quizThe Gravity Doctors website: https://thegravitydoctors.comGravitype Quiz: available on BrennanSpeigelMD.com & virtualmedicine.orgDr Brennan Spiegel: brennanspiegelmd.comDr Lachlan Kent: lachlankent.auBook — Pull: How Gravity Shapes Your Body, Steadies the Mind, and Guides Our Health