It isn't a rare thing to know your blood sugar before you even check it. If you've lived with this disease long enough, sometimes you feel your lows coming from a mile away and you can feel when your blood sugar is anywhere above 200 mg/dL. Maybe it's because you know you ate something, didn't pay attention to the carbohydrates, and didn't take enough insulin...or because you just know by the way you feel, by that slow-as-maple-syrup feeling, that your blood sugar is high.
Either way, how...

