Brooklyn Brazilian Jiu-Jitsu, which already has two locations in South Brooklyn, is opening up a new studio in a storefront at 412 Myrtle Avenue between Vanderbilt and Clinton Avenues in Clinton Hill. We got a peek inside and it looks like it’s going to be a big open space on the main floor with showers and lockers downstairs. Another nice feather in the cap of Myrtle Avenue. Come on, Fulton! GMAP