@LatetotheParty, I have exercised fairly regularly in several different sports over the past few years. What I have found, for myself, is that:
- some sports almost always tend to leave me low (swimming, longer distance running, soccer practices)
- some sports almost always tend to leave me high (sprints series, high intensity training, weight training, soccer matches)
- I have moments in my life when my response to some sports varies: I may go high or low. That is often true when I am stressed or when I lack sleep.
Once I have exercised often enough in one sport, I am always able to compensate the probable effect at least somewhat, by using food and insulin “wisely” and with the right timing. For me, dealing the more random effects is much more difficult. @Eric, I think, always knows what will happen to him.
For me, I don’t always know. I just know what I am likely to do. Some of it is that I am a teenager and more variable than @Eric. Some is also that I don’t know how to tune my exercise as well as he does. For instance, there are days when I go running, and I expect to drop a lot, but, because I ran too hard, I end up a an exercise-induced high: my bad. I also am trying to learn to feel my BG like @Eric can, but I don’t do a good job yet, in particular when I am in full violent exercise and tired.
Still, on average it is predictable after a while, I think. But don’t get frustrated when you hit a few days when your prediction won’t work!