the infrared light wave will act upon endermic fat to increase the combination of fat and oxygen (i.e. burn the fat) and discharge the liquidized fat outside the body with sweat. 20-30 minutes of use can consume 600 calories of energy,which is equal to the consumption of running for 10km. the temperature inside the spaceship can be as high as 90 degrees, which can improve lymph circulation to discharge the toxic and surplus water inside the body to slim the body. it has been proved by the science of biology that it has some assistant functions to arthritis and rheumatism..syi