The HR widget provides a quick snapshot of your heart rate and a 12-hour graph of your heart rate. The graph is plotted using your average heart rate based on 24-minute time slots.
Your minimum heart rate from the last 12 hours is a good indicator of your recovery state. If it is higher than normal, you probably are not yet fully recovered from your last training session.
If you record an exercise, the daily HR values reflect the elevated heart rate and calorie consumption from your training. But keep in mind that the graph and consumption rates are averages. If your heart rate peaks at 200 bpm while exercising, the graph does not show that maximum value, but rather the average from the 24 minutes during which you hit that peak rate.
To be able to see the daily HR widget values, the daily HR feature needs to be activated. You can toggle the feature on or off from the settings under Activity or scroll down to the end of the HR widget and activate it there.
With this feature on, your watch activates the optical heart rate sensor on a regular basis to check your heart rate. This slightly increases battery power consumption.
Once activated, your watch needs 24 minutes before it can start display heart rate information.
Swipe right or press the lower button to return to the watch face view.