• FIR works through radiant heat
• Radiant heat warms the person and objects
• FIR penetrates at a depth of 1.5 inches into the body
• Radiant heat facilitates cell metabolism and enhances nutrient uptake and cell residual excretion from tissue.

* Inou S.et al. Biological activities caused by far infrared radiation Int J Biometerol. 33:145-150, 1989