How to Use Upgraded Auto Activity Detection on Fitbit and Pixel Watch

Google just expanded automatic activity detection on Fitbit Air, Fitbit Edge, and Pixel Watch 3, 4, and 5. The update recognizes more than 100 activities instead of the previous 10 and uses extra context to cut missed workouts by more than half.

If you often forget to start a workout on your wrist, this change makes tracking easier. The feature rolls out later this month through the Google Health app. You do not need a Premium subscription for basic detection, though some related insights require it.

What Changed in Automatic Activity Detection

The new model draws on your workout routines, historical data, manual edits, and location (with permission). Google states it delivers nearly 2x more accurate detections based on offline evaluations against the prior model.

It covers strength training, swimming, racket sports, and team sports in addition to walks, runs, and rides. Activities lasting at least 15 minutes with a sustained elevated heart rate are logged automatically. A summary usually appears in the Google Health app within 30 minutes.

Confirming or editing an entry helps the system learn your patterns. This improves future suggestions without extra effort from you.

How to Prepare Your Devices

Make sure your Fitbit Air, Fitbit Edge, or Pixel Watch 3/4/5 is paired with the Google Health app on Android 11+ or iOS 16.4+. Download the latest app version from the Play Store or App Store.

Charge the device and keep it nearby during setup. For Fitbit Edge users, see our Fitbit Edge setup guide for pairing steps if you just unboxed it.

Update the device software through the Connections menu in Google Health. The activity detection improvements arrive as a firmware update later this month, so check for updates regularly.

Step-by-Step: Review and Confirm Detected Activities

1. Open the Google Health app and go to the Today tab.
2. Look for a notification or card about a detected activity, usually within 30 minutes after you finish.
3. Tap the summary to see duration, heart rate zones, and estimated calories.
4. Confirm the activity type or tap to edit the name, duration, or intensity if needed.
5. Save the changes. The system records your correction for better accuracy next time.

You can also find past detections in the Fitness tab under your activity history. Edit any entry by tapping it and choosing the correct type from the list of more than 100 options.

Customize Detection Settings

Default minimum duration is 15 minutes. Adjust it so short walks do not clutter your log.

In the Google Health app:

• Tap your profile or Connections.
• Select your device.
• Look for Activity detection or similar settings (exact path may vary slightly by device).
• Choose an activity category and set a longer minimum or turn off automatic detection for types you prefer to start manually.

Location permission improves accuracy for outdoor sports. Grant it only if you are comfortable; the feature still works without it using heart rate and motion data.

Tips for Better Results

Wear the tracker snugly on your non-dominant wrist during activity. Loose bands reduce heart rate accuracy and can cause missed detections.

Manually start a few workouts of the types you do often. This calibrates the model faster, especially for swimming or strength sessions that previously went unrecognized.

Check the summary promptly. Editing within the first day helps the learning process more than delayed corrections.

If detection still misses sessions, verify that the device is charged and synced. Open Google Health and pull down on the Today tab to force a sync.

For Pixel Watch users, Gemini on the watch can also start or log workouts with voice. Combine it with automatic detection for hybrid tracking.

Limitations and What Comes Next

The update is rolling out gradually later this month, so not every device receives it on the same day. Availability can vary by region and account.

Health Guardian features such as blood pressure trends and insulin resistance trends arrive at the same time for Premium subscribers on Fitbit Air and Edge. These sit alongside activity data but are separate tools.

Google notes the system continues to improve as more people confirm activities. Expect further refinements in future updates.

Watch: Explore the Google Health App

This official video shows the main tabs and how activity data appears after workouts.

Conclusion

The upgraded automatic activity detection reduces the need to remember starting workouts on Fitbit Air, Fitbit Edge, and recent Pixel Watches. Review summaries, correct the occasional miss, and let the model learn your habits. Combined with the Google Health app’s existing tracking, it gives a clearer picture of your movement without extra taps.

Check for the update in the coming days and test it on your next session.

Sources

• Google Blog: How we’re making Google Health and Fitbit Air smarter than ever (October 12, 2026)
• Google Health Help Center: Get started with Google Fitbit Edge
• Support articles on activity tracking and Pixel Watch detection