This mid-century modern home gym pairs a walnut slat feature wall and full-length mirror with polished terrazzo floors. Sage green walls and ceiling meet a burnt orange wainscot edged by twin green stripes for graphic color blocking. Brass accents include a saucer pendant, ribbed-glass sconce, and chain suspending a black heavy bag. A cognac leather bench and black steel kettlebell rack finish the warm, tailored space.