What does AZM mean?

The ActiveZoneMinutes (AZM) replaced the Active Minutes in the Fitbit Statistics to get a better overview about your active time over the day. The AZM is calculated depending on your current heart rate zone.

1 Minute in fat burn zone             => 1 Active Zone Minute
1 Minute in cardio or peak zone  => 2 Active Zone Minutes

For more information visit the fitbit help: