three rounds of 15 minutes of sauna so one session meant going into the sauna the sauna was of a given temperature but I think for most people what's going to work in terms of what parallels the study is going to be somewhere between 176 and 210 degrees Fahrenheit depending on how heat adapted you are always be safe don't do this if you're pregnant don't this if you're a child Etc so they're doing three rounds of 15 minutes each separated by 2 minutes during that 2 minutes they take a cool shower where they cool off in some way they're not going into a cold plunge but they're cooling off with a cool shower and they're doing that three times that's one session they do 10 sessions those sauna sessions were spaced apart by at least a few days and the entire experiment meaning all 10 sessions were completed within a 3-we period