User Manual

Table Of Contents
ZONE 5: MAXIMAL
When your heart rate during a workout reaches zone 5, the training will feel extremely
hard. Lactic acid will build up in your system much faster than it can be removed, and
you will be forced to stop after a few minutes at most. Athletes include these
maximum-intensity workouts in their training program in a very controlled manner,
fitness enthusiasts do not require them at all.
How are heart rate zones calculated?
Heart rate zones are defined as percentage range based on your maximum heart rate
(max HR). Your max HR is calculated using the standard equation: 220 - your age.
The default zones used in Suunto Wear app, based on percentages of your maximum
heart rate, are:
Zone 5: 87–100%
Zone 4: 82–86%
Zone 3: 77–81%
Zone 2: 72–76%
Zone 1: < 71%
To adjust your max. heart rate, see
Profile settings.
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