How can I see more heart rate sleep data?
I’m trying to find history on my heart rate when I’m sleeping. However, I can only see what my heart rate was during my last sleep. Is it possible to select other days?
Good question. I am not sure if there is any nice summary report out for that, but you can view all the recorded data points in the Health app. Browse to Heart > Heart Rate > Show All Data
You may want to suggest a new feature to the product, through the feedback form in here:
Feedback - Apple Watch - Apple
There are also many 3rd party sleep apps out there that can deliver and track those deeper insights over longer periods of time.