... eye disorder.In most cases, it will take 15 days to be cured, but some take a long time, evenseveral months.(6) Lumbago ... strains and disease.Infrared rays have great warming effect, warm a human's body inside, promote blood circulation, and relieve ... autonomic nervesAutonomic nerves control all the organs automatically, regardless of a persons will.The quantity of Negative ions controls the autonomous ...