In addition to all the other useful features they offer, smartphones can be great tools for tracking health and fitness data. Google Fit, found on Android devices, makes it easy to track not only your exercise, but also your heart and breathing rate, without the need for special equipment.
All you need is the Google Fit and an Android phone to use these features. The app was originally released on Google Pixels, so it may not be available on every Android device at this time.
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First, open the Google Fit app on your device and sign in with your Google account.
If this is your first time logging in, you will be asked to enter some information about yourself, such as your gender, date of birth, weight, and height. Tap “Next” when you are finished.
If you want, you can also enable automatic activity tracking.
After the initial setup, you can now use the heart rate and respiratory rate features.
Check your heart rate with Google Fit
Open Google Fit and look for the “Check Your Heart Rate” input card or the “Heart Rate” card. If you don’t see either of these, the feature isn’t available on your Android device.
The screen will then explain how to use the phone's camera to measure your heart rate. Tap "Next" to continue.
The next screen will instruct you to place your finger over the main camera lens on the back. Tap “Next” again.
Since the app uses the camera, you'll need to allow Google Fit to take photos and videos. Give it permission to continue.
Now you can place your finger on the lens and tap “Start measurement”.
A viewfinder will appear. You need to position your finger so that it completely covers the camera. You can turn on your phone's flashlight if you are in a dark place. Make sure to stay as still as possible while you are measuring.
Once complete, you will see your results and can save the measurement to your account.
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Check your breathing rate with Google Fit
Open Google Fit and look for the “Track Your Respiratory Rate” entry card or the “Respiratory Rate” card.
First, you will see a message on the screen explaining that it will use the camera to measure your breathing. Tap “Next” to continue.
The on-screen interface will explain how to position yourself in front of the camera and guide you to remove any objects that may be blocking it. Tap “Next” again
If you're ready, prop up your phone and select "Start measurement."
See also: Google Fit: Measures heart rate via camera
You will need the front camera of your Android device. Once your head and chest are detected, it will start counting. Try to stay as still as possible.
Once the registration is complete, you will see your results and can save them.
Google says these measurements are not intended to be used for medical diagnosis or to assess medical conditions. You won't get the same level of accuracy as you would with real medical equipment. However, it's useful for occasional health and fitness monitoring.
