Depends on the temperature of the sauna and on the individual. Anything between a few minutes and several hour.
70°C to 100°C, usually around 80°C.
A dry sauna does not need a exhaust fan
In a Swedish sauna yes, in a Finnish sauna no.
Wet sauna is more beneficial with people with psoriasis
You don't have to 'induce' sweating, your body does it automatically when it gets hot and a sauna will make you hot.
There is the normal bath, the pool, the sauna and the shower.
No. Room plan is a blueprint. Sauna is a hot room.
No, since sauna is very humid and it makes your body sweat more.
Read the assembly manual.
Yes. Sauna doesn't get as hot as say a hair dryer.
A sauna is a bath that uses dry heat to induce perspiration, and steam is produced by pouring water on heated stones. A hot tub is a (usually wooden) tub, usually large enough to sit several people, that is filled with hot aerated water and often equipped with a thermostat and whirlpool. It's used for recreation or physical therapy and often found outside, like on a porch. Summary: sauna - uses steam hot tub - uses water
4000000000 degrees not incredibly hot, but hot enough to make you sweat
Steamroom is Turkish invention and a lot colder, Sauna is Finnish invention and a lot hotter place.