05/15/2026
š“šāāļø BLOOD GLUCOSE & PERFORMANCE š©ø
For endurance athletes, glycogen levels can make or break a workout or race. A CGM measures glucose in the blood, not muscle glycogen. When glucose levels are dropping during a workout it could be a sign glycogen levels are dropping (along with feeling like you are hitting the wall).
The goal of using a CGM is taking the data along with other subjective and objective metrics and learning how to fuel strategically. ā”
A few key takeaways from our episode on CGM use in athletes:
⢠Stable energy = better performance
⢠Fueling early prevents late-race crashes
⢠Your brain relies on glucose too š§
⢠Underfueling can hurt recovery, adaptation, and endurance
⢠A CGM can be a helpful tool, but using a CGM without knowledge of how to interpret the data or about the shortcomings of the data is likely not going to be helpful.
Whether youāre training for a marathon, triathlon, or long ride, understanding how your body uses glucose can help you:
āļø maintain pace
āļø improve recovery
āļø avoid bonking
āļø perform more consistently
Fueling is part of training ā not separate from it. š„
Whatās been the biggest game changer in your fueling strategy?