When will Era prompt "Stress Likely"?
What type of Stress is Era measuring? What is the basic principle of its measurement?
What is HRV? What does HRV mean?
Is higher HRV always better? How to improve HRV?
Why are the HRV values displayed in Era different from those in Apple Health?
What is resting heart rate? What does a resting heart rate mean?
What is the frequency of automatic measurements by Era? Can I measure manually?