Fitness chain Pvolve made its Maryland debut at Cabin John Village this week, opening across from Gregorio’s and next door to Seven Locks Animal Hospital. Pvolve, repped by actress Jennifer Aniston, offers low-impact sculpt-and-tone classes using its own brand of equipment. It’s the second fitness studio to open at Cabin John this summer, following the recent debut of YogaSix. And soon there will be a third: Club Pilates is on its way to the Cabin John mini-mall.