The 14-year-old was discharged from Hospital after allegedly being told he was suffering a muscle injury - dying within hours ...
The Oura Ring currently tracks a variety of health metrics like sleep quality, activity levels, heart rate, heart rate ...
Abstract: We describe an evaluation of photoplethysmography (PPG) signals with two wavelengths channels (infrared and red) using a wrist-worn sensor for the estimation of heart rate variability (HRV) ...
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