I suspect what the keto community calls "fat adapted" is basically that "easily bouncing in and out" state -- which some people reach easily, and some take week

I suspect what the keto community calls "fat adapted" is basically that "easily bouncing in and out" state -- which some people reach easily, and some take weeks or months to achieve on keto. (but as far as I know, takes at most 3 days to achieve while fasting)