I'm always curious when I see storefronts being renovated, like the one at 156 Fifth Avenue at 20th Street. After quite a bit of work, it turned out to be a Lululemon Athletica shop, a place that sells yoga-inspired women's athletic wear. The store opened on Black Friday, Nov. 28. Fine. So I was a little startled when I walked by the store again this week...to see that's it's closing...and moving to a new Union Square location, which opens today. Dumb question, but why would you spend all the money to renovate a space only to close and move two months later...?