Fitness scores make no sense.

[DebenPhoenix]

Fitness scores no longer make any sense. My fitness score seems to be stuck on a score of about 19. That is 37% down on 2 years ago, yet 2 years ago I was suffering with complications related to covid and couldn’t walk up the stairs without having to sit down or run more than 1/2k without getting out of breath, whereas now I have trained and run a marathon in 4:30 and all my pace and distance is improving. 
The same is true for 1 year ago - still suffering from what I now know to be Atrial Fibrillation, whereas now I am running my fastest 5k, 5 Mike, 10k, etc. 

 

 

 

 

 

[Jan_Mantau · Accepted solution]

If you have a much lower heart rate these days compared to when you were covid exhausted then this would make perfectly sense. You should adapt your heart rate zones in your settings accordingly. That can be done retroactively.