The second path is around the types of carbs you take while exercising.
Glucose tablets are an excellent way to raise
blood sugar quickly, because they are made of the most basic form of glucose, and it gets absorbed very quickly. But I know many people that do not like them. I met a marathon runner who works for Animas who was diagnosed when he was a kid. During marathons, he uses packets of honey (like what you'd get at a restaurant).