I tested them against the Apple Watch and the Polar chest strap to find out whether you can trust them for your workouts.

Here’s what HRV is, how it works and what can cause it to rise or fall.

A U.S. Air Force KC-135 Stratotanker aircraft refuels a U.S. Air Force F-35A Lightning II aircraft during Operation Epic Fury in the U.S. Central Command area of responsibility April 5, 2026. US Air ...

It's essential to seek emergency care if a rapid heartbeat is paired with confusion or chest pain. ER treatments for tachycardia include medications and electrical cardioversion. Managing stress and ...

Bielefeld University is inviting smartwatch users to join a World Cup study tracking how football matches affect fans’ heart rate, stress, movement, and sleep.The Latest Tech News, Delivered to Your I ...

Anil Oza is a general assignment reporter at STAT focused on the NIH and health equity. You can reach him on Signal at aniloza.16. Heart disease and cancer are the leading causes of death in the ...

Synthetic cooling ingredients added to e-cigarettes caused abnormal heartbeats (arrhythmias) and increased cardiovascular ...

A cross-university paper led by researchers at Queen Mary University of London, published in the Journal of Physiology, shows ...

CNET Labs testing found AirPods Pro 3 averaged 1.67% heart rate error vs a chest strap, second only to Apple Watch Series 11 at 0.98%.

The beating of the heart stops cancers from growing in this organ in mice, reports a study published today in Science 1. This could explain why tumours affecting the heart are so rare in mammals, ...

Does your heartbeat feel out of the pump now, too fast or too slow, or irregular? This is something that is experienced by many people but disregarded. In medical terminology, this condition is ...

Daily heart rhythm monitoring at home using a smartphone significantly reduces the number of same-day cancellations for electrical cardioversion.