User's Manual

39
Icon
Zone
Calculatio
n
Description
Fat
Burn
Between
50% and
69% of
your
maximum
heart rate
This is a low-to-medium intensity exercise
zone. This zone may be a good place to
start for those new to exercise. It's called
the Fat Burn zone because a higher
percentage of calories are burned from
fat, but the total calorie burn rate is lower.
Cardi
o
Between
70% and
84% of
your
maximum
heart rate
This is a medium-to-high intensity
exercise zone. In this zone you're pushing
yourself but not straining. For most
people this is the exercise zone to target.
Peak
Greater
than 85%
of your
maximum
heart rate
This is a high-intensity exercise zone. This
zone is for short intense sessions that
improve performance and speed.
Note that the heart-rate value appears gray if your watch is searching for a
stronger reading.
Custom heart-rate zones
Instead of using the default heart-rate zones, you can set a custom zone or a
custom max heart rate if you have a specific target in mind. For example, elite
athletes might have a target that differs from the American Heart Association's