You generally always have a running estimate in your head, "I ate two tacos, took three units of Humolog, needed to correct down an extra 50 points with the extra unit (because I undershot last meal), etc."
But there are factors that you have a more difficult time predicting your levels with, like exercise, illness, the type of carb your eating (some carbs take longer than others to hit your system, but if you treat all the same, you insulin will hit you faster than your carbs and you're now hypoglycemic).
Truly staying on top of your numbers and this disease means constantly checking. You can always make a guess, but when the risk of serious short-term and long-term complications hang in the balance, you tend to want to know for sure.
You generally always have a running estimate in your head, "I ate two tacos, took three units of Humolog, needed to correct down an extra 50 points with the extra unit (because I undershot last meal), etc."
But there are factors that you have a more difficult time predicting your levels with, like exercise, illness, the type of carb your eating (some carbs take longer than others to hit your system, but if you treat all the same, you insulin will hit you faster than your carbs and you're now hypoglycemic).
Truly staying on top of your numbers and this disease means constantly checking. You can always make a guess, but when the risk of serious short-term and long-term complications hang in the balance, you tend to want to know for sure.