What is tepidariun?

A tepidarium is a warm room found in ancient Roman bathhouses and spas that was used for relaxation and socializing. The room was heated with a hypocaust system, which circulated hot air underneath the floor and walls. The temperature in a tepidarium was typically around 36-39 degrees Celsius (97-102 degrees Fahrenheit), making it a comfortable and soothing environment for those seeking a break from the cold outdoor temperatures or the hot steamy conditions of the sauna. The tepidarium was also used as a transitional space between cooler and hotter rooms in the bathhouse, as it helped to precondition the body for the more intense temperature changes. Some modern wellness centers and spas may still incorporate a tepidarium into their facilities as a way to promote relaxation and wellness.