I'm not subject to the whims of anything except what I just asked for.

I can also cancel it just as easily, if it's exhausting. Which--I'm finding it hard to understand why it would be.

I don't schedule my life like that at all, I kinda wander around all day. But the idea of a reminder that I specifically asked for? It's the only kind of reminder I want, actually. It'll keep me from the actually-exhausting habit of checking my watch or wondering how long it's been.

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.