And depending on the person it can also change depending on diet and mixing microbiomes. Back when I lived with roommates my frequency changed based on who I lived with to some extent, matching closer to their frequency without changing diet (since I was weight training my diet was controlled and I didn’t eat their food).

Now living permanently with a spouse it has settled on a higher frequency than I remember before moving out on my own. Weird stuff.

Sounds like I'm still in the range then! Interesting that it varies so much. I've heard some people say (or I guess imply) that they do it daily, and it's so different from my experience that I've always wondered which way is more "normal". I guess both are!