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Elite Sports MagFitness · Sports Training
Bianca Reyes
Author

Bianca Reyes

Bianca Reyes covers Training, Mobility and Sport News.

Articles by Bianca Reyes

Science

How Wearables Measure Heart Rate Variability

Watches and rings derive heart rate variability from the pulse wave using photoplethysmography, while chest straps read the heart's electrical signal. Studies show the methods agree at rest, with error bars that widen under strain and noise.

Bianca Reyes
Fitness

How to Choose a Fitness Tracker That Actually Fits Your Life

Buy for the number you will act on: heart rate reads close to a chest strap in lab tests, calorie burn does not, and sleep scores work best as weekly trends. Accuracy, features, and comfort decide the right pick.

Bianca Reyes