I don't use a sauna. In my imagination some people might prefer to stop their sauna usage when it feels right. That doesn't require checking a timer.
That's certainly how it is for me; mentally I think sauna is an hour, of 5-15 minute chunks inside the warm room, but sometimes it might be more.
There are days when I walk in and immediately nope-out after a couple of minutes, and that's usually a sign that I'm getting sick.
But when it stops feeling good that's the time to leave, or stop for the evening.
That's certainly how it is for me; mentally I think sauna is an hour, of 5-15 minute chunks inside the warm room, but sometimes it might be more.
There are days when I walk in and immediately nope-out after a couple of minutes, and that's usually a sign that I'm getting sick.
But when it stops feeling good that's the time to leave, or stop for the evening.