Icon Zone Calculation Description
Below
Zone
Below 50%
of your
maximum
heart rate
Below the fat burn zone, your heart
beats at a slower pace.
Fat Burn
Zone
Between
50% and
69% of
your
maximum
heart rate
In the fat burn zone, you’re likely in a
moderate activity such as a brisk
walk. Your heart rate and breathing
might be elevated, but you can still
carry on a conversation.
Cardio
Zone
Between
70% and
84% of
your
maximum
heart rate
In the cardio zone, you’re likely
doing a vigorous activity such as
running or spinning.
Peak
Zone
Greater
than 85% of
your
maximum
heart rate
In the peak zone, you’re likely doing
a short, intense activity that
improves performance and speed,
such as sprinting or high-intensity
interval training.
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