sauna fibromyalgia, hydrotherapy fibromyalgia, cold plunge chronic pain, cold exposure fibromyalgia, heat therapy safety

Introduction Temperature is powerful medicine and powerful stress — sometimes both in the same session. Saunas promise deep relaxation, hydrotherapy pools appear in fibromyalgia programmes across Europe, and cold plunges have become social media’s favourite cure-all. For a condition defined by a sensitive, easily overwhelmed nervous system, the honest question is not “does temperature therapy…