How do I monitor my sleep?

When you sleep while wearing the watch, it automatically records your sleep data. You can also synchronize the sleep data to the Zepp app to view your sleep duration, sleep stages, sleep score, and sleep suggestions.
Enable Assisted Sleep Monitoring for more accurate sleep information (REM sleep stage).
Keep the watch connected to the phone. Open the Zepp app and go to Profile > My Devices > Amazfit T-Rex 2 > Health Monitoring to enable Assisted Sleep Monitoring.