User Manual
Table Of Contents
- Get started
- Set up Ionic
- Basics
- Apps and Clock Faces
- Notifications
- Timekeeping
- Activity and Sleep
- Fitness and Exercise
- Music and Podcasts
- Fitbit Pay
- Weather
- Update, Restart, and Erase
- Troubleshooting
- General Info and Specifications
- Regulatory & Safety Notices
Check your heart rate
Heart-rate zones help you target the training intensity of your choice. Ionic shows
your current zone and progress toward your maximum heart rate next to your
heart-rate reading. In the Fitbit app, you can see your time spent in zones during a
particular day or exercise. Three zones based on American Heart Association
recommendations are available, or you can create a custom zone if you have a
specific heart rate you're targeting.
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.
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