| Thanks for the responses. A couple of times the question was asked if I'm on insulin. No I'm not. Just 500mg of metformin twice per day.
From reading the responses, it's becoming apparent that longer exercise (45 min. to over an hour) makes a much bigger difference than shorter exercise (30 min. or less). I realize there are variables involved, like intensity or anaerobic vs. aerobic, etc. But it seems to me, and maybe I'm wrong, that a 30 minute walk or a gentle run is going to mostly burn just fat and not have a big effect on glucose levels. Am I wrong about that? | 
