Thank you for your thoughts. It is a studio that has wooden floors and no windows, 1 door which is usually not opened up during class. The temp is 105 and the thermostat is easy to see. It is just the areas that touch the bare floor. I do know they mop after each session BUT, I do smell sweat in the air as I enter. I have not yet addressed my concerns with the owner of the studio. I am still out for medical reasons. 🙁