I think it depends on when and where they mention it. If they put it on their profile, the first thing that comes to mind is that they are conceited, narcissistic, and self absorbed (and yes I realize I mentioned the same thing three times....) especially if its a white woman (it just feeds the yogi stereotype). My family has been practicing meditation for decades, so I do value a woman who does meditate. This includes yoga but I would much rather find out when she asks me if I want to go with her, rather than seeing a bunch of pictures in yoga pants that don't really make sense.... like in the store... that just makes her look pretentious.
What is the first thing you think?