Custom Heart Rate Zones; Missing Signal - Fitbit Zip IONIC Product Manual

To quickly determine what zone you're in, tap the clock screen until a heart icon appears. Depending on
your current zone, different versions of a heart will be shown.
Out of zone

When you're out of zone, which means you're below 50% of your maximum heart rate, your
heart rate may be elevated but not enough to be considered exercise.

Fat Burn zone, which means your heart rate is between 50% and 69% of your maximum, is the
low-to-medium intensity exercise zone and 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 zone, which means your heart rate is between 70% and 84% of your maximum, is the
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 zone, which means your heart rate is 85% of your maximum or higher, is the high-intensity
exercise zone. Peak zone is for short intense sessions that improve performance and speed.
At any time you can check your Fitbit app or fitbit.com dashboard to see the amount of time you've
spent in each zone.

Custom heart rate zones

Instead of using the default heart rate zones, you can configure a custom zone. When your heart rate is
above or below your custom zone you'll see an outline of a heart, and when your heart rate is in your
custom zone you'll see a solid heart.
At any time you can check your Fitbit app or fitbit.com dashboard to see the amount of time you've spent
in your custom zone.
For more details about heart rate monitoring, including links to relevant American Heart Association
information, see our "Heart rate FAQs" article on https://help.fitbit.com.

Missing signal

The Fitbit Ionic continuously monitors your heart rate while you're exercising and throughout the day.
However, occasionally the heart rate monitor may have difficulty finding a good enough signal to show a
hear rate. In those cases, you'll see this screen:
Fat burn
FPO (HR screen with missing HR)
Cardio Peak
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