
What I also did not like about the Fitbit is the skin irritation that I got if I wore it too close to my skin. I also quite liked the idea of notifications on the band and I did not want a smart watch as I have watches that tell the time from Tag (the Tag Connected is another story). But, it's still better to have this information than not - and it makes exercise tracking on stationary devices possible, like bikes.So I decided to upgrade from the Fitbit step counter to the Band 2 due to the fitness features and GPS. I didn't even know what the "burn zone" data meant until I dug up the information under Heart Rate in settings, and even the pop-up icon on the OLED display isn't all that intuitive. I should get a certain amount of cardio a week, or so my cardiologist says, but the Charge HR doesn't make it all that easy for me to target and achieve those goals. Zones are color-coded as yellow, orange or red (fat-burning, cardio and peak), and on the Charge HR you can see your heart icon in one of three positions to indicate whether you're currently in that zone. The Charge HR calculates heart rate "burn zones" based on a formula of 220 minus your age included in the Fitbit profile, but you can customize your own as well in the app. Sometimes, my own heart rate drifted into a "fat burn" mode, but I knew it was more likely due to having had too much coffee. The problem is, higher heart rate doesn't always mean active exercise. The app tends to count the minutes spent in higher heart-rate target zones and calculate it as exercise.
