By monitoring key aspects of your running and fitness progress, you get a better look at your current performance level and what you need to do to keep up the good work or continue improving. Select Garmin devices collect data while you work out in order to bring you these running metrics and physiological measurements. If your device is showing you stats, but you want to know more about what they mean, then you've come to the right place. What can you do with this calculated information? That's up to you, but we've got some suggestions.