How are different health metrics used to calculate your last nights sleep score? As an example your score will be lower if your last nights heart rate average is higher than your weekly resting heart rate average.
Track your sleep related data and see your daily sleep score based on data collected by your Apple Watch.
Sleep Details integrates with the Health app and uses data stored in the Health app.
-Two week sleep score trend available on your iPhone.
In this case the heart rate ring will be colored red so you can easily spot which metrics are negatively affecting your score.