In ancient China, kitchens were considered the heart of the home, and some even incorporated a built-in sauna. These kitchens were designed to not only prepare meals but also provide a space for relaxation and rejuvenation. The sauna in these kitchens was typically made of wood, with a heated floor and benches for seating. It was a place where the Chinese could enjoy the benefits of steam and heat therapy while their meals were being prepared. The combination of a kitchen and sauna created a unique and holistic experience for the residents, allowing them to nourish their bodies and promote overall well-being.