From the watch face, swipe to view the heart rate widget. The heart rate widget displays your current heart rate in beats per minute (bpm).
Tap the touchscreen to view a graph of your heart rate for the last 4 hours.
The graph shows your recent heart rate activity, high and low heart rate, and color-coded bars to indicate the time spent in each heart rate zone (Setting Your Heart Rate Zones).
Swipe up to view your average resting heart rate (RHR) values for the last 7 days.