### Stress level
Your device analyzes your heart rate variability while you are inactive to determine your overall stress

**The stress level range is from 0 to 100, where 0 to 25 is a resting state, 26 to 50 is low stress, 51 to 75 is medium stress, and 76 to 100 is a high stress state.**

### Body battery
Your device analyzes your heart rate variability, stress level, sleep quality, and activity data to determine your overall Body Battery level.

**The Body Battery level range is from 0 to 100, where 0 to 25 is low reserve energy, 26 to 50 is medium reserve energy, 51 to 75 is high reserve energy, and 76 to 100 is very high reserve energy.**
