From watches and screenless bands that track heart rate variability, VO₂ max and sleep to physiological testing, fitness is ...

This is the ultimate heart rate variability deep dive—nuanced, practical, and funny. I'll even share a story involving Andrew Huberman, Starbucks, and my girlfriend’s friend seeing my butt. Really.

Looking at the heart rate variability (HRV) feature on your watch or smart ring can tell you more about the habits impacting ...

Wearables measure several aspects of health, and heart rate variability might be one of those. It may be surprising when your device informs you that your heart rate variability is high or low, but ...

Apple Watch heart rate tracking may soon run all day, instead of checking in at intervals and only going constant while you work out. Apple is testing that change alongside a Fitness and Health app ...

Apple's forthcoming smartwatches, the Apple Watch Series 12 and Apple Watch Ultra 4, may offer always‑on heart rate tracking ...

These days, everyone from the average Susan to the hardcore data-loving wellness enthusiast has the technology to track just about anything in the name of self-optimization. A ring wearable tells you ...

AirPods Pro 3 heart-rate testing looks promising against Apple Watch and chest-strap benchmarks, but the results apply best to healthy users in controlled workouts. AirPods Pro 3 may be closing the ...

Apple, Garmin, Samsung, Google or Amazfit? I put these watches through the paces to see where they land on step, distance and heart rate accuracy. I wasn’t aiming to run a marathon when I started this ...