A Finnish sauna kept at the upper register, wood-lined and quiet. Water on stone at the turn of each interval, nothing else.
What it does
82–90°C dry heat, precisely maintained
Löyly poured on the interval, not on request
Timed to the edge of comfort, then rest
Silence observed after the second round
The reading
Temperature
82°C
Duration
35 min
Protocol
3 rounds, 35 min. 10 min in, löyly at the turn, 3 min rest between. Cool rinse to close.