just like it's written. sau-na.
Sauna is a Finnish word with same meaning as in English.
Sauna, for a start.
Finnish language.
Verb saunoa # (intransitive) To bath in a sauna
It is a Finnish origin, it means the same in Finnish as in English. It's just name of the place.
Sauna suits are not meant to be worn in sauna. You are supposed to be naked in there.
Sauna twin is a product that makes you sweat, but disgraces the name of sauna because it has nothing to do with actual sauna.
In a Swedish sauna yes, in a Finnish sauna no.
In a Finnish sauna, yes. In a Turkish sauna, no.
Sauna World Championships are held in Finland, not Sweden. Swedish sauna is about 60 degrees colder than the Finnish sauna.
Sauna
You don't use sauna suit in the sauna.