11/02/2026
CGMs IN SPORTS: PERFORMANCE TOOL OR DATA OVERLOAD? 📊
Continuous glucose monitors (CGMs) are gaining popularity among athletes. But does more glucose data translate to better performance?
THE POTENTIAL BENEFITS:
✓ Identify individual glucose responses to meals and exercise.
✓ Explore glucose patterns associated with carbohydrate timing and fueling.
✓ Identify trends worth investigating alongside symptoms and training demands.
✓ Support glucose management in athletes with diabetes.
THE LIMITATIONS:
✗ CGMs measure interstitial glucose—not muscle glycogen or energy availability.
✗ Readings can lag behind blood glucose during exercise.
✗ Normal glucose spikes aren’t necessarily harmful.
✗ A stable glucose curve doesn’t guarantee adequate fueling.
✗ Overinterpreting data may encourage unnecessary food restrictions or anxiety.
WHAT DOES THE RESEARCH SAY?
Emerging peer-reviewed research suggests CGMs can provide useful insights into glucose responses during exercise and fueling. Preliminary studies have also demonstrated changes in glucose variability with CGM-guided carbohydrate strategies.
But improved glucose stability does not necessarily mean improved athletic performance.
Current evidence has not established that CGM-guided fueling improves performance or recovery in athletes without diabetes.
THE BOTTOM LINE:
CGMs may be useful in selected situations, but they should complement—not replace—individualized sports nutrition strategies.
Adequate energy intake, carbohydrate availability, hydration, and recovery remain the foundation of performance.
FUEL THE ATHLETE. NOT THE GRAPH. REACH OUT TO US IF YOU’RE CONSIDERING A CGM, WE ARE HERE TO SUPPORT YOU IN INTERPRETING THE DATA INTO ACTIONABLE TOOLS.