What is the Energy feature, and what can I do with it?

Your device constantly gathers data which is analyzed to determine your energy levels and disposition based on your Heart Rate Variability (HRV).
This HRV is composed of data from respiratory rate, heart rate, blood pressure, sleep, standing time, steps, and calories.

Helo Devices constantly monitor these data and send them to the App, where an advanced algorithm analyzes it and provides you with your energy level for the day.

The Energy feature is available on:

What does “Activity HR” mean, and what are the numbers at the bottom of the Heart Rate page in the App?