Bad cold and far infrared sauna?

If you are in doubt at all, it may be safer to wait until you're stronger.

Disease functions in a narrow band of temp and ph. Change those conditions and you give the immune system a fighting chance.

The body can try and fight off an infection by either fever or by lowing the body temp. Most of the time it is the fever. When I had my herx, I was cold. Laid in bed with a sweat suit on and a blanket.

The sauna taken in moderation shouldn't cause you any problems. In my case I have a hot tub. It has been cloudy for the last couple of days, so no sunlight, my solar heating panels don't work. Really love my hot tub.