Fitness centers tent not to have great physiques, with easy-scrub finishes and unflattering fluorescent lighting. If you’re lucky, there’s a zingy accent wall. Charting a different path, the Equinox chain is infusing its brand with an industrial-luxe sensibility that’s both studly and sybaritic. INC Architecture & design masterminded a loft-like outpost in a former cardboard factory in Brooklyn, employing lavish finishes to give way-finding and space-making some real muscle.

Large, square floor tiles give the entryway to the women’s locker room a vibe that’s more spa than sports. At the same time, clear-lacquered hot-rolled steel walls pay homage to the neighborhood’s industrial past.