Originally Posted by
terrymorse
Yes, here's a rough example graph of carbs and fat usage (grams/minute) by intensity:
Zone 2 is already gobbling up the carbs. It's worthwhile to know that you can still deplete your glucose in zone 2, so even zone 2 efforts of 90 minutes or more benefit from carb ingestion, mainly by reducing fatigue from declining blood glucose.
Wearing a continuous glucose monitor (CGM) seems to be all the rage, and from what I understand, against racing rules.
I am wondering if anyone here, or any has read about measuring like this during a ride, for a nondiabetic person. When we hit the dreaded bonk, I wonder what the blood glucose level might be. Anyone know?