Two things would explain a similar outcome for me. 1) As others mentioned, if you don't eat in the morning, it is very common for BG to go up. As I've said before, it takes more insulin for me to skip breakfast than to bolus for a 20-30 carb breakfast. 2) I find that when I do an exercise that I am not used to, my BG tend to go up, often quite dramatically. Once I get in shape for that exercise, it will tend to lower my BG.