The new yoga and fitness studio that will eventually call the historic Bethesda U.S. Post Office home is setting up a temporary pop-up studio at the Bethesda Crescent building at 7475 Wisconsin Ave.  Bridges Fitness & Yoga owner Alain Cohen said in an email Monday the business plans to use the pop-up studio to teach a range of classes and to inform people about the new fitness club that will open up across the street in the post office building.  Read more.