Depending on the gym, some are a lot more third-spacey than others. I’ve been to a smaller gym where people just hang around after their workouts to socialize, with occasional impromptu dinner outings when the gym closed for the night. I miss that place. You still meet people at bigger commercial gyms, but it’s not the same.
Your local gym? CrossFit box? Football/soccer club? Community centre? Library? Outdoor? Scouts?
Community center and library sure, I wouldn’t really consider the rest a third space.
Depending on the gym, some are a lot more third-spacey than others. I’ve been to a smaller gym where people just hang around after their workouts to socialize, with occasional impromptu dinner outings when the gym closed for the night. I miss that place. You still meet people at bigger commercial gyms, but it’s not the same.