Unusual high peak in heart rate early morning showing up only when exercising during the day

[Blekky]

Does anyone see unusual high peaks in heart rate in the early hours of the morning only when you have exercised during the day? I have this unusual high heart rate peak showing up in my zone minutes early morning around 1-3am but only when I do exercise during the day. It seems to be a glitch in the system. Does anyone have the same problem? I’m using a Fitbit versa 2

[LZeeW]

@Blekky   Many users are complaining about this odd spike in the zone minute graph.  I get them, too, but I don't think it has anything to do with exercise.  It doesn't matter what model Fitbit you use or whether you are an Android or iPhone user.  Premium users get a sleeping heart rate.  I NEVER see any spike in my sleeping heart rate at the same time.

Many, many users have complained about this, but Fitbit hasn't acknowledged that this is an issue or taken any steps to fix it.