This is something that has been bothering me for a while. The Gatoride vs. Cytomax click here thread got me thinking about it. I don't know the answer.

Here's my question:

If you put any high glycemic food/sugar into your blood while exercising, i.e. Gatorade, Bananas, Clif Bars, etc., shouldn't you have a corresponding low blood sugar episode shortly thereafter? Correct me if I'm wrong, but doesn't a sudden spike in blood sugar also cause a spike in insulin, AKA hypoglycemia? Wouldn't this cause a "bonking" effect?

It would seem to me that high sugar foods would be counter-productive to endurance activities like biking where you spend a long time in the saddle. Am I missing something?