This as-told-to essay is based on a conversation with Felix Kühn, a 29-year-old sauna manager in Berlin, Germany. It has been edited for length and clarity. I started working at Vabali Spa Berlin ...

Friedrich Gerlach, Emil Löber and Sophia Reissenweber created and designed the MFG Mobile Sauna in Halle, Germany. The MFG project is a mobile sauna that offers a space for relaxation and ...