How does a infrared sauna work is rooted in how infrared light interacts with human tissue. Infrared waves penetrate the skin and gently warm the body from within, reaching muscles and joints more efficiently than heated air. This internal warming process promotes increased circulation and encourages the body to sweat at lower temperatures. As the body heats up, blood flow improves and muscles begin to relax, which can support recovery after physical activity or long days of work. Chinook Hot Tubs and Saunas often explains to customers that this deeper heat experience is why infrared technology feels soothing rather than stifling.