Cold-water immersion (CWI) has been used for its therapeutic and physiological benefits for millennia, with historical references dating as far back as 3500 BC. The ancient Egyptians documented its use in the Edwin Smith Papyrus, highlighting the therapeutic effects of cold water, and cold therapy continued to gain traction over time. Notably, the ancient Greeks also utilized cold-water immersion for health purposes, social activities, and relaxation.

Before delving into whether saunas and steam rooms can help fight off a cold, it’s essential to understand what the common cold is. According to the Centers for Disease Control and Prevention (CDC), the common cold is a highly contagious respiratory illness. It primarily affects the nose, throat, sinuses, and windpipe. More than 200 viruses can cause cold-like symptoms, with rhinoviruses being the most common culprit.