The correlation between estimated and measured VO2max value for all... | Download Scientific Diagram
![Hands-on: Fitbit's new Flex 2 and Charge 2 Activity Trackers, plus Blaze & Alta updates | DC Rainmaker Hands-on: Fitbit's new Flex 2 and Charge 2 Activity Trackers, plus Blaze & Alta updates | DC Rainmaker](https://media.dcrainmaker.com/images/2016/08/Fitbit-Charge-2_Fitbit-App_iOS_Cardio-Fitness_Ryan-Hall.png)
Hands-on: Fitbit's new Flex 2 and Charge 2 Activity Trackers, plus Blaze & Alta updates | DC Rainmaker
![i did it! after 9 weeks of training, i raised my VO2 max from 39 to 44.6. i feel really good. - fitbit post - Imgur i did it! after 9 weeks of training, i raised my VO2 max from 39 to 44.6. i feel really good. - fitbit post - Imgur](https://i.imgur.com/Lr8ZL8Cg.jpg)
i did it! after 9 weeks of training, i raised my VO2 max from 39 to 44.6. i feel really good. - fitbit post - Imgur
![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://preview.redd.it/7ufcccz21ug91.jpg?auto=webp&s=1342fe155c9ae8bdaad8fad0077b8a60028fc007)