Effort has its own soundtrack — equipment moving, feet on a surface, a whistle or a shout across the room, sometimes water, sometimes music. Zeytinburnu Beştelsiz Yarı Olimpik Yüzme Havuzu in Zeytinburnu adds its own version to that mix, whatever the sport calls for. Open floor or closed room, packed or nearly empty — these details finish the picture and shape whether the habit actually sticks.