[Miss Mad Scientist]

I just thought of something, for those who don't have a sauna in the area.

You could also try an infrared blanket.
It is basically a whole body blanket that can increase body temp for a period of time.

Looks ridiculous though xD
But I would guess just as effective a sauna, and you don't have to travel.

I am not getting one, but I thought I would share my idea. I have so many sometimes on NBE^^