· it
The best fitness trackers and watches we’ve tested
Fitness trackers have come a long way from the simple bands that tracked steps and little else. Modern trackers can monitor everything from your heart health to...
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- · ai
New study shows how AI could unlock deeper heart data from the Apple Watch’s optical sensor
A few days ago, we looked into how Apple could one day use brain wave sensors in AirPods to measure sleep quality and even detect seizures. Now, a new paper sho...