A. 1. Ensure proper fit: Make sure the device is snug on your wrist while sleeping, as a loose fit can lead to inaccurate sleep tracking. 2. Set sleep schedule: In the app, set a consistent sleep schedule to help the app better track your sleep patterns.

B. 3. Avoid excessive movement: Try to minimize movement during sleep, as excessive movement can lead to inaccurate readings. 4. Restart the app: Close the app completely and reopen it to refresh its performance.