All your questions answered on the new Fitbit metric

Fitbit has unveiled a brand new goal called Active Zone Minutes, and it’s coming to many of Fitbit’s fitness trackers and smartwatches.

Fitbit Active Zone Minutes are a super-charged new goal, introduced on the Fitbit Charge 4, which uses your personalised heart rate data to ensure you’re moving properly.
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https://www.wareable.com/fitbit/active-zone-minutes-explained-7968