Define Jewish Workout Meaning

Jewish Workout
A Jewish workout is a term used to describe a session in a sauna. As referenced in the Seinfield episode - The Yada Yada (S8E19).

George: Hey, where you just at the health club?

Tim: Oh, well, I didn't do much. I just sat in the sauna. You know, it was more like a Jewish workout.
By Zahara