After hitting average BS over 180 and an 8.2 a1c, my doc upped my metformin from 1500mg to 2000mg per day and added 25mg glipizide per day.
On my side, I got serious about my diet and changed from 5 x 1/2 hour cardio workouts per week to 3 x 1/2 hour cardio + 1 hour spinning class + 2 heavy leg lifting workouts (leg press, leg extension, and leg curl) per week.
Two weeks in a row I have experienced extreme lows ( 39 and 49) three hours after spinning. I ate before spinning and immediately after spinning, and the last class I drank an 8oz regular Gatorade during the class.
While I am thrilled that my average BS is now below 120, the bottom line is I want to lower my A1C, not die from a sudden low. I haven't called my doc yet, but I am thinking about taking the glipizide later in the day on spinning days. My worry is my numbers will exceed 200 after spinning without it. Not sure which is worse.