Sedentary (Open HeartWatch)
The sedentary heart rate badge from HeartWatch is now embedded into AutoSleep. Sedentary heart rate is captured in the background by your Apple Watch (Series 1 or higher) when you have been still for five minutes or longer. It is presented as a colour keyed badge which lets you see the time spent in each zone.
In AutoSleep it will report sedentary heart rate for the previous day, starting from when you woke up. It's a super snapshot of your daytime heart health.
You don't even need to have HeartWatch installed to see this, but if you do, touching it will open HeartWatch to let you review your heart rate in more detail including your overall wellbeing and workouts.