I’ve always said I wanted to tear down walls with this business: the walls between neighbors, and the one between “I’m not a Pilates person” and the Reformer. Last week, standing in our new Riverdale studio, it got a lot more literal. Not a metaphorical wall. An actual wall. I can stand in an empty room and look at it for a really, really long time, and I did, until the voice in my head started sounding eerily like Ronald Reagan's: Tear down this wall!