Oura reports that heart rate variability (HRV) measures the variation in heartbeat timing, reflecting stress levels and ...

Your heart beats around 100,000 times every day. Heart rate is a key marker of cardiovascular activity and an important vital sign. But your pulse is not as steady as a precision clock – nor would you ...

Heart rate variability can tell you whether to take it easy or aim for maximum intensity to achieve optimal results – but ...

Fitness trackers and smart watches are widely popular wearable devices that measure several types of health metrics, including step count, calories burned, sleep quality, Vo2 max and heart rate. As a ...

Most patients (56%) had low A1c variability (0%-0.49% per quarter), and about one third had moderate variability (0.5%-1%). The lowest risk for the outcomes of MI ...