Dean Karnazes - Wow! The new #fitbitcharge2 has a Cardio Fitness Level tool that estimates your VO2 max. Time to start sprinting! #teamfitbit #fitbit #findyourfit Fitbit | Facebook
![Which one should I believe? I personally tend to Fitbit. Garmin says I'm worse than before but I don't feel that way. : r/GarminFenix Which one should I believe? I personally tend to Fitbit. Garmin says I'm worse than before but I don't feel that way. : r/GarminFenix](https://i.redd.it/7ufcccz21ug91.jpg)
Which one should I believe? I personally tend to Fitbit. Garmin says I'm worse than before but I don't feel that way. : r/GarminFenix
![VO2 Max Scores and Fitness Scores on Fitbit, Garmin and Other Fitness Trackers: Are They Useful? - YouTube VO2 Max Scores and Fitness Scores on Fitbit, Garmin and Other Fitness Trackers: Are They Useful? - YouTube](https://i.ytimg.com/vi/_EKEYm_t_90/maxresdefault.jpg)