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I finally got an exact cardio fitness score! I read recently how you need to GPS track a couple of 10min+ runs for a more specific score (I was at a range
VO2 Max aka cardio fitness : r/fitbit
How to read Fitbit health and fitness scores & stats - Tech Advisor
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Fitbit Charge 5 vs Charge 4 vs Charge 3: The differences
What is my cardio fitness score?
Fitbit Charge 4 Fitness Tracker Review: Twice as expensive as the Huawei Band 4 Pro and also twice as good? - NotebookCheck.net Reviews