// Link · 11 March 2026

What 82,000 Apple Watch Wearers Are Teaching Scientists About Fitness and Health

The Apple Heart & Movement Study tracked health and activity data from 82,000+ U.S. participants using the Apple Watch and Apple iPhone. Researchers collected millions of sensor readings—including 1.1 million ECG recordings—alongside surveys and health records. The study shows how large-scale wearab...

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