Fitbit Zip Charge 2 User Manual

13
Default heart-rate zones
Default heart-rate zones are calculated using your estimated maximum heart rate.
Fitbit calculates your maximum heart rate with the common formula of 220 minus
your age.
The heart icon you see above your current heart rate tells you your zone. Refer to the
following table for an explanation of the different heart rate zones.
Icon
Zone
Calculation
Description
Out of Zone
Below 50% of your
maximum heart rate.
Your heart rate may
be elevated but not
enough to be
considered exercise.
Fat Burn
Between 50% and
69% of your
maximum heart rate.
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.
Cardio
Between 70% and
84% of maximum
heart rate.
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.
High-intensity
exercise zone. This
zone is for short
intense sessions that
improve
performance and
speed.

Fitbit Zip Charge 2 Specifications

General

Brand	Fitbit Zip
Model	Charge 2
Category	Fitness Trackers
Language	English