Garmin CIRQA Hits 77% Deep Sleep Accuracy but Struggles with REM

The Quantified Scientist examines the Garmin CIRQA, a wearable designed for fitness and health tracking. With features like heart rate variability (HRV) monitoring and sleep stage analysis, the CIRQA offers a range of insights into daily wellness. Notably, it achieves a 77% agreement with reference data in deep sleep detection, highlighting its reliability in tracking […]
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