Fitbit Surge - Manual (Page 19)

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To quickly determine what zone you’re in, take a look at the heart icon:
Out of zone Fat burn Cardio Peak
• When you’re out of zone, which means you’re below 50% of maximum, your
heart rate may be elevated but not enough to be considered exercise.
• Fat Burn zone, which means your heart rate is 50% to 69% of 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 70% to 84% of 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 greater than 85% of maximum, is
the high-intensity exercise zone. The peak zone is for short intense sessions
that improve performance and speed.
Custom heart-rate zones
Instead of using the default heart rate zones you can configure a custom heart rate
zone in the Fitbit app or fitbit.com dashboard. 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.
For more details about heart rate tracking, including links to relevant American Heart
Association information, see
https://help.fitbit.com .
Tracking sleep
Your Surge automatically tracks the time you sleep and your movement during the
night to help you understand your sleep patterns. To track sleep, simply wear your
Surge to bed. To help you achieve a healthy sleep cycle, by default you have a sleep
goal of 8 hours of sleep per night. You can customize your sleep goal in the Fitbit
app or on your fitbit.com dashboard to an amount that better suits the amount of
sleep you need.
To see your sleep log, sync your tracker when you wake up. On your Fitbit
dashboard you can see your sleep log and more detailed information about your
sleep patterns and trends.