Heart rate in cardio zone when not wearing - Fitbit Community
Cardio fitness score reset a week ago and I was on the highlighted area before, I run every other day and it's never been a problem before... what should i do? :
Cardio Fitness Score suddenly Dropping. - Fitbit Community
Solved: Heart rate monitor not accurate during exercise - Fitbit Community
How accurate is the cardio fitness? I've improved from the red line to where it shows now. : r/fitbit
Solved: How is my Cardio Fitness score so high? - Fitbit Community
OK, what is your cardio score and age? - Fitbit Community