Metabolism + Metabolic Disease

A Global Voice in Contrast Therapy and Metabolic Health Susanna Søberg holds a PhD in metabolism from the University of Copenhagen and the Center for Physical Activity at Rigshospitalet. Since 2016, she has conducted pioneering research on how cold and heat exposure affect human metabolism, the nervous system, and stress resilience. Her work has contributed to a new understanding of how simple physical stimuli can improve both mental and physical health.

She is the founder of Thermalist® and the Søberg Institute, where she developed a science-based method for optimizing health through contrast therapy and breathwork. The Thermalist® Method is rooted in her research and targets metabolic and nervous system regulation.

Susanna Søberg’s contrast therapy protocols — including the well-known Søberg Principle — have gained international reach through bestselling books, major podcasts, media coverage, and personal coaching of, among others, Cristiano Ronaldo. Professor Andrew Huberman of Stanford University describes her as: "Based on her scientific research, academic background, and her understanding and application of deliberate cold and heat exposure, Susanna Søberg is considered one of the world’s leading experts in the field."

She published her debut book Winter Swimming (original Danish title Hop i Havet) in 2019, now translated into 14 languages. Her latest book Thermalist is already a bestseller in Denmark. ---- Dr. Susanna Søberg’s mission is bold: to help 1% of the world — more than 80 million people — lower stress and cortisol levels by 20–25% through the science of contrast therapy.

A PhD in metabolism from the University of Copenhagen, Dr. Søberg is the founder of the Søberg Institute and Thermalist®, and one of the world’s leading voices in contrast therapy and metabolic health. In this talk, she unveils how cold and heat exposure, breathwork, and her scientifically proven Søberg Principle® unlock resilience, restore energy, and protect against the cascade of stress-related diseases.

Drawing on over a decade of research and global recognition — from bestselling books to major podcasts and even direct coaching of elite performers like Cristiano Ronaldo — Dr. Søberg makes cutting-edge science accessible, practical, and life-changing.

Audiences will discover:

Why stress is the undercurrent of the world’s top 10 killers

How deliberate cold and heat exposure triggers powerful metabolic and nervous system adaptations

Simple, proven protocols to reduce stress and prevent chronic disease.

Martin Kremmer is a renowned speaker and biohacker dedicated to leveraging biological aging tests to prevent disease, build resilience, and extend healthspan for executives and elite athletes. Recognized as a leading figure in the Nordic biohacking community, he has devoted over 5,000 hours to studying human performance, biology, and stress physiology. As the CEO and Chief Health Coach at Freeage, he spearheads a data-driven approach to optimize healthspan, using biological aging tests to guide personalized interventions for Special Forces, Olympic champions, Tour de France cyclists, high-profile executives, and politicians, enhancing their resilience, focus, and vitality in demanding careers. Since 2019, he has coached hundreds of individuals and continues to do so, applying cutting-edge biomarker insights to prevent age-related diseases and boost longevity. Over many years, Martin has shaped the national scene of proactive health through organizing health-oriented events and talks, notably co-founding CPH Health Week and remaining involved to ensure the latest science and knowledge are surfaced properly.

With a 21-year career at a Big-4 company as a Global Director, Martin mastered the intersection of data, human behavior, and performance, providing extensive global travel (100+ days per year) experience in stress management, jetlag mitigation, and thriving under high-pressure conditions, with his expertise also spanning product innovation and design. Since 2012, his passion for biohacking has evolved into a mission to personalize health optimization through biological aging tests, leveraging epigenetics, blood-based markers, DNA, and hormones to fine-tune metabolic health, energy levels, and nervous system balance. A turning point came in 2019 when he took the TEDx Copenhagen stage to share insights on biomarker-driven healthcare, solidifying his mission to bring this science to a broader audience through Freeage’s innovative health testing services.