Zone time is the total amount of time your exercise intensity has been in the zone.
The initial value of the goal is 150 min.
You can change the goal of Zone Time in "Settings" > "Weekly Goals".
It may not match the exercise time.
|Heart Rate Zone||Duration||Zone Time|
|Zone 5||1 min||1 min|
|Zone 4||1 min||1 min|
|Zone 3||1 min||1 min|
|Zone 2||1 min||1 min|
|Zone 1||1 min||1 min|
|Zone 1 less||1 min||0 min|
For a workout like above, the exercise duration is 6 minutes, but Zone Time is 5 minutes.
In addition, if "Exclude low-intensity exercise" is turned on, it may be less than 5 minutes.
For workouts without heart rate data, Zone Time will be 0 minutes.