Like "The same thing happened to me yesterday and I am baffled. Walking usually makes my BG drop by up to 100 points. Yesterday, I played 9 holes of golf with a friend and walked the course, pulling my bag. (I'm a bad golfer and take a lot of strokes, so golf is better exercise for me.) It was hot here in Florida with temps in the 80's. Afterwards, my BG was 143 and climbed up to 273 by dinnertime. I finally got it back to 125 at 3 am. Prior to going out, my BG was 72 and I ate my usual lunch of an apple with peanut butter. I will be interested to see other responses here and hopefully an explanation for why this happened. Thanks for starting this discussion"