Measure the level of oxygen in your blood to help you learn when there may be an indication of important changes in your fitness and wellness.
Easily uncover changes to your well-being and discover potential signs of a fever or illness by tracking skin temperature variation.**
Measure your average breaths per minute at night, then use the Fitbit app to see your stats and help you learn if there are signs of significant changes.
Track the variation of time between heartbeats each night. A significant decrease may indicate your body is showing potential signs of stress, illness or fatigue.
Track your resting heart rate each day and over the past week, and see easy-to-read graphs right in the Fitbit app.
Understand your SpO2 levels
While it may sound like the name of a sci-fi character, SpO2 actually refers to the oxygen levels in your blood. Fitbit tracks your nightly average SpO2 levels so you can see trends that may be indications of important changes in your fitness and wellness.
Learn about your skin temperature variations
Tracking skin temperature variation can be a helpful way to identify potential changes in your body—like fever or ovulation. Automatically measure your skin temperature variation and see trends in the app. Plus, Sense 2 and Sense users can even see minute-by-minute variation.**
Learn more from your breathing
Breathing rate is your average breaths per minute. When you wear your Fitbit watch or tracker to sleep you can automatically track your breathing rate, then see your trends over time on your Health Metrics dashboard.
Know your heart on another level
The heart rate tracking feature on your Fitbit watch or tracker automatically measures the variation of time between each heartbeat—known as heart rate variability (HRV)—along with your resting heart rate and sends your stats to the Fitbit app. Then, you can use the Health Metrics dashboard to view any significant changes that can help you understand if your body is showing potential signs of stress, illness or fatigue.
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*The Health Metrics dashboard and the metrics displayed in the dashboard are not available in all countries. Metrics available may vary by device. See here for more information. Not intended for medical purposes.This feature is not intended to diagnose or treat any medical condition and should not 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.
**Significant changes in ambient temperature may negatively impact skin temperature tracking.