What are heart-rate notifications? Charge 5, Inspire 3, Sense, Sense 2, Versa 3, Versa 4, and Google Pixel Watch notify you when we detect that your heart rate is outside of your high or low thresholds while you appear to be inactive for at least 10 minutes.

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. Below the fat burn zone, your heart beats at a slower pace. In the fat burn zone, you're likely in a moderate activity such as a brisk walk.

If your Fitbit ECG app shows "Inconclusive: High Heart Rate" for a heart rate above 120 bpm, there's often a simple explanation for it, like stress, dehydration, excitement, or exercise.

All Fitbit models, except a few older ones without any heart rate monitoring, do measure HR continuously whenever worn.

The Fitbit ECG app software algorithm was able to correctly identify people with AFib 98.7% of the time and correctly identify people with a normal sinus rhythm 100% of the time. Does my Fitbit wrist-worn product support the Fitbit ECG app?

From the You tab in the Fitbit app on your phone, find the Irregular rhythm notifications tile in the Health assessments section. Tap View history. If Fitbit detects signs of any irregular heart rhythms that might be AFib, you see a list of notifications and when they occurred.

Fat burn zone means your heart rate is functioning at 50-69% of maximum. That is low to medium intensity exercise. To get out of that range you need to get your heart rate up higher through higher intensity exercise. Cardio zone is 70-84% of maximum and peak is greater than 85%.

A normal resting heart rate for adults ranges from 60 to 100 beats per minute. Generally, a lower heart rate at rest implies more efficient heart function and better cardiovascular fitness. For example, a well-trained athlete might have a normal resting heart rate closer to 40 beats per minute.

60 to 100 beats per minute The ability to track resting heart rate with Fitbit devices allows you to know if your resting heart rate falls within an “average” range. The American Heart Association notes that a normal resting heart rate ranges from 60 to 100 beats per minute (bpm) for adults.

A normal resting heart rate for adults ranges from 60 to 100 beats per minute. Generally, a lower heart rate at rest implies more efficient heart function and better cardiovascular fitness. For example, a well-trained athlete might have a normal resting heart rate closer to 40 beats per minute.

The Fitbit ECG app software algorithm was able to correctly identify people with AFib 98.7% of the time and correctly identify people with a normal sinus rhythm 100% of the time. Does my Fitbit wrist-worn product support the Fitbit ECG app?

You may have an ECG or undergo other types of monitoring tests. These will help determine if you are indeed experiencing an abnormally slow, fast, or irregular heartbeat and what may be causing the problem.