What do the grey bars represent on the sleeping heart rate screen?
What are the grey bars on the sleeping heart rate screen
[Re-Titled by Moderator]
Original Title: Sleeping Heart rate
Apple Watch Series 10, watchOS 26
Can you give us more details?
Are you seeing bluish grey bars like in this screenshot?
If yes, your watch is detecting a nap, or you have been sitting in your chair without moving, which I did before going to bed and after having breakfast, reading the news.