Sauna-bathing has taken London and the rest of the United Kingdom by storm, particularly among trendy 20- and 30-somethings keen to try a new pastime that’s healthier than nights out in pubs and bars.

Around the U.K., the number of public sauna sites has jumped from 45 in 2023 to 147 so far this year, according to the British Sauna Society.

Sweating it out in communal spaces for relaxation, physical or mental therapy and socializing has long been a staple of many cultures around the world.