i own a infrared sauna that my husband build for me with lawrence wilson sauna plan,we spent only one hundert dollar to build it,you can buy everything you need at home depot,but you need to know how to connect the wires.I use it twice a week for 20 minutes,and for some reason when i use it i don't get reactions to supplements,and if i dont use it i can't take anything.It is very calming if you use it only for like 15 minutes before bed,makes me sleep really deep.And the red.orange.yellow light,even tho you can't see orange and yellow,has an effect like the chinese chakra,you can look up these color chakra online.It also helps with kidney and liver.I yust love it,can't live without it.Hope that helps