The Thermalist Method™ is a science-based approach to contrast therapy developed by Dr. Susanna Søberg, PhD, a leading researcher in metabolism and thermal stress. Grounded in human clinical research, the method uses structured cycles of heat, cold, and rest to activate the body’s natural adaptation processes. By intentionally combining sauna bathing with cold water immersion, it supports circulation, metabolic function, and nervous system balance—providing a simple, repeatable framework for building resilience and improving overall well-being.