Are booty scrunch sorts/leggings really popular at the gym you attend?

I recently changed gyms and at the one I go to now, about half the girls where those leggings.

I'm not complaining (or perving) but it was a bit of a surprise.

Are booty scrunch sorts/leggings really popular at the gym you attend?
Are booty scrunch sorts/leggings really popular at the gym you attend?
Post Opinion