a suana is filled with air, not water, aluminum, steel or copper.
You can sit in a 190 degree sauna and not get skin burns.
try swimming in 190 degree water!
Are you trying to make a fool of yourself, or is it just happening to you by default?
People are more than 70% water, you tool.
Aside from that, animal physiology and reaction to temperature changes is vastly different from that of largely inorganic matter, like air and water....You can sit in a 190° dry sauna for a short while because your skin can evaporate water off quickly enough to maintain its cellular integrity.
Your knowledge of both meteorology and human physiology couldn't fill the cover of a matchbook.
I just posted a link asserting that sitting in a
212 degree sauna is leisurely and relaxing.
And it simply makes no difference what the human skin does with heat since the same human skin is exposed to equally warm water, metal and air in my thought experiment.
The experiment accurately gauges the thermal conductivity of the materials involved in the experiment.
But I can provide you with data if you doubt me. Thermal conductivity is the exact opposite of insulative (R) values, so there are two ways that you or I can look em up.