Sleep stages and heart rate don’t align

[Sweng]

Based on what sleep researchers have found, deep sleep is when your heart rate is the lowest throughout your sleep cycles. Yet, when I look at the heart rate for when Fitbit claims I’m in a “deep sleep” period, it doesn’t correspond/align with when my heart rate is lowest. And there are often times where my heart rate drops to its lowest levels and Fitbit claims I’m in light sleep and awake during these times. The sleep tracking seems to be terribly off, can anyone give any insight on this?

[AlvaroFitbit]

@Sweng Welcome to the Fitbit Community! Sorry for the delay in my reply.

Thank you for your feedback about sleep detection and interpretation against your heart rate reading. You can share your idea on how to improve this feature in our Feature Suggestions board. Search for the idea first to see if one already exists so you can add your vote. The more votes an idea gets the more likely the developers will try to implement it. 

Let me know how it goes.