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With hundreds of health wearables on the market, knowing which features actually matter is essential. This buying guide covers sensor quality, continuous monitoring, battery life, sleep tracking, GPS, and how to match device capabilities to your specific health goals.

Heart Rate Variability (HRV) is one of the most powerful health metrics available on modern wearables. Learn what HRV measures, why higher is better, and how continuous tracking can optimize your recovery, stress management, and overall wellness.