I go outside and find work to do in the hot sun (wear a hat and light fabric long sleeves if real sunny).. oh move firewood around, clean up the yard, rake some, dig in the garden, whatever. After about an hour of that I am dripping and take a hot soapy shower.

I have noticed showering twice a day when mercury toxic is a good idea.

The theory of other people's toxic sweat in a sauna keeps me far away from that, it makes too much perfect sense to ignore.

Hope you are not using antiperspirants with aluminum either, don;t block your armpit lymph nodes with more toxins. They make some good herbal ones these days, have to get that at your whole food store with your non-flouride toothpaste.