[Ronin]

Hi Mad Rebel!

Any intense exercise will cause your muscle cells to use up the available glycogen which causes the cell to send out a signal for more glucose. This signal is usually that "burn" from lactic acid that tells the liver to release stored glycogen into the blood stream. That, in turn, causes the pancreas to secret more insulin to let the glucose into the muscle cell.

As a fellow cyclist (tandemist actually) I find the same thing happens following hard rides (and we tend to ride hard a lot). However, the effect is short lived and actually insures that you don't become insulin resistant (although I highly recommend that you get a fasting C-Peptide test done to validate that assumption).

I've also had the drop in BG levels from a walk, but the result is not consistent. If you like the hard bike ride, keep pedaling. Your A1c numbers indicate that the routine is working. Don't mess with success!