1. Sleep curve: Open Huawei Health App, and you can see "Sleep Record" at the bottom of the "Exercise Record" page. Click to view the sleep curve of the day. The curve of deep sleep is smooth, with no obvious fluctuation and long duration; While the curves in other states fluctuate greatly.

2, heart rate changes: during sleep, heart rate will also change. During deep sleep, the heart rate is usually slow and steady; In other states, the heart rate may change rapidly.

3. Physical feelings: If you wake up in a deep sleep, you will usually feel heavy and unresponsive; It may be easier to wake up in other States.