Track your nightly breathing rate to check trends over time.
This data is included in the Health Metrics tile 
in the Fitbit app. For more information, refer to What should I know about health metrics in the Fitbit app?
in the Fitbit app. For more information, refer to What should I know about health metrics in the Fitbit app?What's breathing rate in the Fitbit app?
Breathing rate, also known as respiratory rate, is the number of breaths you take per minute. Typically, breathing rate is 12-20 breaths per minute.
This feature isn't intended to diagnose or treat any medical condition and shouldn't be relied on for any medical purposes. It is intended to provide information that can help you manage your well-being. If you have any concerns about your health, please talk to a healthcare provider. If you believe you are experiencing a medical emergency, call emergency services.
Why should I track breathing rate in the Fitbit app?
Track your average breathing rate during sleep to help you gauge your overall well-being. Breathing rate during sleep usually doesn’t vary significantly from night to night.
How does my Fitbit device track breathing rate?
The time between heartbeats naturally changes as you breathe. It shortens when you inhale and lengthens when you exhale.
Your device’s optical heart-rate sensor measures these intervals during sleep to calculate your average nightly breathing rate. The graph displays data from your longest sleep period in the last 24 hours, only considering periods over 3 hours.
How do I check breathing rate trends in the Fitbit app?
Wear your device for at least a full day, including to sleep at night. Then check your stats:
- In the morning, open the Fitbit app. In the Today tab
, tap the Health Metrics tile
- Tap Breathing rate (BR) to check the graphs of your nightly average breathing rate over the course of a week, month, or year.
- In the Week view, tap Learn More above the graph for an even better understanding of how this metric is calculated.
, tap the Health Metrics tile What factors can affect breathing rate?
Several factors can affect your breathing rate, including age, sex, weight, lung and heart conditions, anxiety, and fever.