The science behind infrared saunas revolves around the principle of using infrared radiation to heat the body directly, leading to a range of health benefits. Infrared radiation is a part of the electromagnetic spectrum, lying just beyond the visible light spectrum. It's divided into three categories: near-infrared (NIR), mid-infrared (MIR), and far-infrared (FIR).
Infrared saunas typically utilize the far-infrared spectrum, (as our sauna pods do at hiki hub), which is known for its ability to penetrate the skin and generate heat at deeper tissue levels.
When you step into an infrared sauna, the infrared heaters inside emit FIR rays. These rays are absorbed by the body's surface, and they penetrate the skin to a depth of around 1.5 inches (4 centimeters) or more. As these rays are absorbed, they gently raise the body's core temperature, inducing a state of controlled hyperthermia. This deep heating effect triggers several physiological responses.
"Sauna bathing is associated with many health benefits, from cardiovascular and cognitive health to physical fitness and muscle maintenance." - ScienceDirect