A couple new 5th Avenue businesses are about to satisfy the demands of Slopers who’ve been longing for a one-stop shop to carbo-load and work out. The corner space on 6th Street is going to be a branch of Brooklyn Bread, the Carroll Gardens bakery on Court Street and 2nd Place. And the space right next door is being turned into an outpost of Fitness Together, a gym with hundreds of franchises across the U.S. (Their only other NYC location, however, is in Cobble Hill.) Fitness Together emphasizes personal training, and the 5th Avenue space is being carved up to include three private studios. The gym is scheduled to open sometime next month, and the bakery should be cooking by late December or early January. GMAP