Hi
@Spud 7 . Another swimmer and gymmer, here.
I do find that exercise often sees my blood glucose rise quickly immediately after an exercise session, even though I generally fast before exercising. I do then find levels drop very quickly after , too.
I would agree about the testing timing , though find it disheartening to see high numbers after exercise. So leave it an hour or so after, then test before eating or drinking anything but water. (Important not to get dehydrated, as I find this has an adverse effect too).
Well done on the low carbing. That will be the biggest impact. Exercise alone won’t be enough to lower BG levels.