After seeing all of the poor cardio fitness scores I'm now realising how ridiculous mine must seem (I have no idea how I got this) : r/fitbit
Hands-on: Fitbit's new Flex 2 and Charge 2 Activity Trackers, plus Blaze & Alta updates | DC Rainmaker
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
What is VO2 Max and why should you care? | Trusted Reviews
What Is Your Fitness Score? - Page 2 - Fitbit Community
PDF) Validity of Cardiorespiratory Fitness Measured with Fitbit Compared to VO2max