In this episode, I explain how to increase your control over your nervous system — not just to manage stress, but to recalibrate your autonomic nervous system for long-term physiological resilience and adaptability. This episode goes beyond basic stress management techniques to explore how to fine-tune your nervous system, become more stress tolerant, and use your personal data to know exactly when and how to intervene. Using the three I’s framework — Investigate, Interpret and Intervene — I explain how to assess key physiological markers such as heart rate variability (HRV), respiratory rate and CO₂ tolerance. I also discuss a range of tools and strategies, ranging from free to clinical-grade, that can shift your nervous system acutely (like cold exposure or visual resets) and chronically (such as structured breathwork or exercise). This episode is for anyone looking to actively train their brain and body to improve resilience, adaptability and peak performance. Read the episode show notes at performpodcast.com. Thank you to our sponsorsAG1: https://drinkag1.com/perform David: https://davidprotein.com/perform LMNT: https://drinklmnt.com/perform Momentous: https://www.livemomentous.com/perform Eight Sleep: https://www.eightsleep.com/perform Timestamps00:00:00 Controlling Your Nervous System 00:04:59 Nervous System Branches, Recalibrate Autonomic Nervous System 00:09:46 Sponsors: AG1 & David Protein 00:12:30 Read & Regulate, Highway Analogy, Resilience 00:18:35 Investigate: Performance-Based Tests, Psychology & Physiological Markers 00:24:07 Heart Rate Variability (HRV), Genes & Lifestyle, Age, Health & Resilience 00:36:22 Sponsors: LMNT & Momentous 00:39:23 Tool: Measuring HRV 00:41:46 Respiratory Rate, CO2 Tolerance Test 00:45:37 Metabolism & Respiration, Chronic Hyperventilation, Overbreathing 00:53:46 Tool: Measuring Respiratory Rate 00:54:48 Interpret: HRV Scores, Device Variability, Standard Deviation 01:00:48 HRV Stability, Sleep Schedule, Alcohol, Exercise & Meal Frequency 01:04:34 Sponsor: Eight Sleep 01:05:56 HRV Data & When to Intervene, Acute vs Chronic, Training 01:09:16 Interpret: Respiratory Rate, Overbreathing & Breathing Problems 01:15:53 Intervention: Acute Changes, 4x4 Matrix 01:17:50 Acute & Chronic Categories; Cold Water Immersion 01:21:50 Acute Actions, Visual Resets, Valsalva Maneuver, Vagal Nerve Stimulators 01:28:09 Chronic Actions, Desensitization, Timing for Results 01:32:57 Exercise, High-Intensity Interval Training (HIIT) 01:34:57 Breathwork, Tool: Reduce Stress & Anxiety with Breathwork 01:42:47 Internal Bio, Meditation, Cold Exposure, Gear 1 Walking 01:48:55 External Bio, Weight Belt 01:52:26 Resonant Breathing, HRV Bio;