Three young women are inside a gymnasium with wooden floors

Three young women are inside a gymnasium with wooden floors. One woman is sitting on a ledge near a window with metal mesh protection. She is wearing a dark top, dark shorts, and socks. A second woman is sitting on the floor using dumbbells and is wearing a blue top, blue shorts, and socks. A third woman is lying on her back on the floor wearing a green sweatshirt, blue shorts, and knee pads. A volleyball is also on the floor. The image does not provide sufficient information to determine the exact location in Sofia, Bulgaria.