FWIW:

FBG at 7:02 this morning was 108.

Had a lot of things to deal with over the course of the morning, didn't eat
or exercise, although I drank maybe about 8 ounces of water. I wouldn't
characterize my activities during the morning as "active" but I was standing
up a fair amount of the time.

By 12:08 I was finally at a good stopping point, and was thinking to go
ahead and eat, and plan to exercise later. On testing I got 125, which I
thought might not be right, two immediately subsequent pokes got 115 and
119. I don't like to start a meal at that level so I decided to go ahead
and exercise after all. At 12:24 after finishing my morning routine I
retested and got 102.

I know others here have posted that for them, exercising before breakfast
causes their BG to rise. A couple of months ago I tested exercising before
breakfast and didn't find much difference between exercising or not, but
today the exercise gave me a nice drop. I don't know what -- if anything --
this might imply about how my metabolism currently functions, but I thought
it was interesting.