Welcome to the Forums @Oma2018!
Thanks for bringing this up, there are some reasons why this could be happening:
- Your HR remains relatively high for those 2 hours and so the Fitbit thinks that you are not asleep yet. This can be due to stress, or because you had a meal just before going to sleep.
- Additionally, overeating, drinking coffee or consuming lots of sugar can lead to this.
- You are moving around a lot during those two hours so the Fitbit assumes you are awake. Perhaps due to bad dreams or simply moving a lot while you sleep.
If none of the above could be the reasons, I'd recommend trying to gently clean the HR sensor with a damp piece of cloth and then drying it. It could be that the Fitbit is not getting accurate HR readings and that confuses it.
Let me know if you have any further questions!
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