The common theme among subjects in the study was that far infrared sauna use was similar to moderate exercise but «much more relaxing». (fitnessforwardstudio.com)
Although more research is needed due to the small number of research subjects in these studies, why wait to begin these practices? (mindbodygreen.com)
Early on, the experiments employed volunteers, but as the program grew, ordinary American citizens and foreign nationals became unsuspecting subjects in the studies. (discovermagazine.com)