Millions of people wake up to a heart rate variability score on their Fitbit, Apple Watch, WHOOP or Garmin. Few know what the number means, and even fewer know how it should shift as they age.

People are broadcasting their resting heart rates everywhere, from dating apps to Instagram stories. But is a low number ...

A new meta-analysis of 27 studies finds that heart rate variability differences after hospital discharge are ...

In today’s era of self-optimization, everyone is seemingly obsessed with longevity and improving their own healthspan. Thanks to modern day wearable tech, we’re no longer limited to basic health stats ...

A proliferation of data from wearable technology is telling people how to optimize their job performance. Is that a good thing? BEN VOLDMANCredit... Supported by By Noam Scheiber Dr. Ravi Solanki ...

Apple Watch Series 12 introduces what Apple calls the Health Sensing System: new optical and electrical heart sensors that measure heart rate every 5 seconds all day and heart rate variability every 5 ...