Any South Florida resident knows the best swimming pool is the one in his or her own back yard. But that one gets bugs and stuff in it. It needs to be cleaned, chemicalized, and otherwise maintained. A better choice, and one with a scenic view, is the perfectly proportioned body of water atop the AutoNation Building's seventh-floor outdoor terrace. It belongs to the Fitness Co. Maybe you should jump in before your workout to stretch and decompress, or maybe take a quick dip after your tummy crunches, to do the same. Another plus: It's too far above the ground for leaves to cause a problem -- though even if they fell in, it wouldn't be your concern. High above it all, you can float your cares away. But don't dilly-dally: the pool's empty much of the time now but won't be after all the new condominiums nearby are filled to capacity. Hours are Monday through Friday, 6 a.m. to 9 p.m.; Saturday, 8 a.m. to 5 p.m. On Sunday, it's closed.