Communal saunas are on the rise in the U.K. Here’s why

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.

It may be winter and there may be a biting chill in the air, but the dozen men and women who have packed this small sauna room in east London are happily sweating away in their swimwear.