User's Manual

38
Sync your watch to save the workout in your exercise history. There you can find
additional stats and see your route and elevation climbed if you used connected
GPS.
Check your heart rate
Heart-rate zones help you target the training intensity of your choice. FB415
shows your current zone and progress toward your maximum heart rate next to
your heart-rate reading. On your Fitbit dashboard, you can see your time spent in
zones during a particular day or exercise. Three zones based on American Heart
Association recommendations are available by default, or you can create a custom
zone if you have a specific heart rate you're targeting.
Default heart-rate zones
Default heart-rate zones are calculated using your estimated maximum heart rate.
Fitbit calculates your maximum heart rate with the common formula of 220 minus
your age.
Icon
Zone
Calculatio
n
Description
Out
of
Zone
Below
50% of
your
maximum
heart rate
Your heart rate may be elevated, but not
enough to be considered exercise.