Even the FDA recognizes the FitSauna infrared heating technology for ELIMINATING PAIN AND REDUCING INFLAMMATION. FitSauna is Great for eliminating back pain, neck pain, muscle spasms, and headaches to name just a few. One of our customer’s most favorite benefits: quick, effective relief from pain. Even Arthritis pain is reduced for several reasons. A well-known fact is that the REAL cause of arthritis is acidic buildup. Using the FitSauna and drinking plenty of water helps you eliminate this cause of arthritis.