Garmin devices use extended physiological metrics that can help you gain insight into your body’s fatigue level and how it changes over the course of a run. Performance condition gives you an idea of how you will fare in a workout. As you run, this feature analyzes your pace, heart rate and heart rate variability to make a real-time assessment of your ability to perform. Get to know your “good days” and your “bad days” with Joe from Garmin.

Learn more about the Forerunner 935 here: https://buy.garmin.com/en-US/US/p/564291