How to turn on heart rate alerts on a Garmin watch

Gathering heart rate data during your workouts is incredibly useful and important for many reasons. It can help guide your recovery since your heart rate will be a major indicator of how much energy you exerted during the workout. Heart rate data can also help you understand your performance and fitness over time. Also, knowing your heart rate during an activity can guide what you do. Depending on the activity, you may base the entire workout on your heart rate, adjusting as you go based on what your heart is doing.