Industrial-chic fitness club interior, constructivist architecture, exposed ductwork, concrete floors, metal beams, functional pipes, geometric shapes, bold color schemes, abstract artwork, neon lighting, high ceilings, open spaces, modern exercise equipment, free weights, treadmills, stationary bikes, mirrored walls, wooden accents, minimalist decor, urban feel, dynamic atmosphere, low-key lighting, shallow depth of field, 2/3 composition, symmetrical framing, gritty textures, ambient occlusion.