Meet Epsy Tarchak
Epsy Tarchak, M.S.
Founder, Retrain Your Breathing
Epsy Tarchak is a breathing science specialist dedicated to optimizing energy, performance, and longevity through evidence-based breath retraining. Grounded by her M.S. in Chemistry, she integrates modern respiratory physiology with the Buteyko Method and Oxygen Advantage®, along with rigorously interpreted principles from Qigong and Pranayama, bridging ancient breathing wisdom with contemporary science. She is also a Certified Integrative Qigong Teacher, incorporating Qigong as a powerful somatic practice to release tension, regulate the nervous system, cultivate body awareness, and support the free flow of Qi (life-force energy).
With extensive professional training and years of applied practice, Epsy has worked with hundreds of individuals, athletes, and therapists worldwide while leading workshops, practitioner programs, and educational sessions focused on retraining dysfunctional breathing patterns. Her method improves CO₂ tolerance, nasal airflow, and diaphragmatic mechanics to enhance oxygen efficiency, nervous system regulation, and metabolic balance, resulting in increased energy, faster recovery, better focus, reduced stress and anxiety, and improved sleep quality.
Originally from Paris and now based in Marin County, California, Epsy brings the perspective of a seasoned entrepreneur to her work. Having experienced firsthand the tremendous benefits of breathing retraining on both physical and mental health, she founded her signature program, Retrain Your Breathing, to provide a clinically compatible, measurement-based approach that begins with objective assessment (respiratory rate, nasal vs. oral breathing, BOLT/CO₂ tolerance, biomechanics) and advances through targeted, low-load interventions ("breathe less, better") and personalized home protocols.
Epsy collaborates with functional and integrative physicians, therapists, and performance coaches to deliver protocol-driven programs and measurable outcomes aligned with client and patient goals, empowering people to regulate their physiology, restore balance, and cultivate lifelong resilience, vitality, and longevity.
Complementing her scientific approach, Epsy is also trained in Buddhist psychology and mindfulness at Spirit Rock Meditation Center, enriching her work with compassion, presence, and a holistic understanding of mind-body wellness.
