![Has anyone seen their Cardio Fitness Heart Rate improve while using the Fitbit? Or has anyone worked to improve it and seen results? (I have attached a picture for an example/clarity) : Has anyone seen their Cardio Fitness Heart Rate improve while using the Fitbit? Or has anyone worked to improve it and seen results? (I have attached a picture for an example/clarity) :](https://preview.redd.it/txwdsckeccj21.jpg?auto=webp&s=6c9e96243c5f534a85769c12103a754f2295cf4d)
Has anyone seen their Cardio Fitness Heart Rate improve while using the Fitbit? Or has anyone worked to improve it and seen results? (I have attached a picture for an example/clarity) :
![Fitbit Charge HR review: a heart-rate tracker that's skipped a beat | Wearable technology | The Guardian Fitbit Charge HR review: a heart-rate tracker that's skipped a beat | Wearable technology | The Guardian](https://i.guim.co.uk/img/static/sys-images/Guardian/Pix/pictures/2015/2/12/1423760072207/d36ab23f-9d5c-493c-91a4-c55b5b530661-1020x612.jpeg?width=1200&height=630&quality=85&auto=format&fit=crop&overlay-align=bottom%2Cleft&overlay-width=100p&overlay-base64=L2ltZy9zdGF0aWMvb3ZlcmxheXMvdGctcmV2aWV3LTMucG5n&enable=upscale&s=184f7e2cde6fcc19c86077612293ad6e)
Fitbit Charge HR review: a heart-rate tracker that's skipped a beat | Wearable technology | The Guardian
![Fitbit Charge 4 Fitness and Activity Tracker with Built-in GPS, Heart Rate, Sleep & Swim Tracking, Rosewood/Rosewood, One Size (S &L Bands Included) : Sports & Outdoors Fitbit Charge 4 Fitness and Activity Tracker with Built-in GPS, Heart Rate, Sleep & Swim Tracking, Rosewood/Rosewood, One Size (S &L Bands Included) : Sports & Outdoors](https://m.media-amazon.com/images/I/51LcDkgKEtS._AC_SL1200_.jpg)