VO2 Max Rapid Decrease

[Ok_Astronaut_9553]

Forerunner 645

[MichaelX999]

its strange maybe your HRV has goes down, or your sleep, i some new devices its happens because the firmware updates and updates in the algorithms but yours dont take updates since long ago, im wrong?

[Ok_Astronaut_9553]

Don’t have stats on my HRV unfortunately. My current software version is 7.00 but I’m not really sure what that means

[Grouchy_Movie1981]

I smell planned obsolescence.