Fueling Like a Pro: How Athletes Use CGMs to Time Nutrition for Peak Performance
Fueling Like a Pro: How Athletes Use CGMs to Time Nutrition for Peak Performance In professional sports, the difference between winning and losing often comes down to fractions of a second or the ability to sustain effort for one more mile. For decades, athletes have relied on perceived exertion, heart rate monitors, and standardized nutrition plans to guide their training and competition strategies. But a new tool is changing how elite and recreational athletes approach fueling: continuous glucose monitors. Originally designed for diabetes management, CGMs are now appearing on the arms of marathoners, cyclists, triathletes, and CrossFit competitors. These sensors provide real-time glucose data that reveals exactly how the body is using energy during training and competition. This visibility allows athletes to fine-tune their nutrition timing, avoid the dreaded "bonk," and optimize recovery in ways that were previously based on guesswork. It's the ultimate applicat...