NAOSU brings authentic Japanese sauna culture to RiNo with a setup that feels more like a wellness sanctuary than your typical sweat session. The traditional wood-fired sauna runs hot and dry, paired with cold plunge tubs that'll shock your system back to life. What sets NAOSU apart is the intentional atmosphere - think minimalist design, quality materials, and a vibe that encourages actual relaxation over Instagram moments. The staff knows their stuff about contrast therapy and will guide you through proper sauna etiquette if you're new to the scene. This isn't a quick recovery stop between workouts. Plan to stay awhile, cycle through multiple rounds, and leave feeling like you just spent the day at a Japanese onsen. Perfect for anyone ready to upgrade their recovery game beyond basic infrared saunas.