Your Fitbit's HRV reading can offer clues about stress and recovery, but your usual numbers matter more than anyone else's.

Facial video estimated heart rate variability with strong agreement against ECG measurements. Heart rate variability ...

The effect of variability on learning is recognized in many fields: learning is harder when input is variable, but variability leads to better generalization of the knowledge we learned. In this ...

Visit-to-visit systolic blood pressure variability can independently predict the risk for mortality among patients with antineutrophil cytoplasmic antibody-associated vasculitis, a recent study finds.

A new study combining climate data with fossil records of large mammals that lived across Africa during the last 4 million years casts doubt on a long-standing hypothesis that repeated shifts in ...

There is variability in when and how cells divide during the development of embryos. While researchers traditionally believed this variability was an obstacle that needed to be regulated, a group now ...

Global environmental change not only entails changes in mean environmental conditions but also in their variability. Changes in climate variability are often associated with altered disturbance ...

A team of obstetricians, gynecologists and data analysts from West Virginia University School of Medicine and the West Virginia University School of Public Health, working with colleagues from WHOOP ...

This article was originally featured on The Conversation. 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 ...

How long did it take you to get to work today? Me? A 12 mile trip took about 45 minutes. My daughter’s bus was running a little late. My son forgot to pack his backpack last night - what a surprise.

A systematic review and meta-analysis of 10 cohort studies involving 11,647 adult kidney transplant recipients found that ...