Apple Watch might be able to detect your blood oxygen levels
Monday, March 9, 2020 at 12:31PM 
Aside from being able to detect irregular heartbeats, the Apple Watch might be able to monitor your blood oxygen levels, too. Tipsters talking to 9to5Mac discovered this feature by looking at iOS 14 code snippets. The wearable could let you know if your blood's oxygen saturation falls below the threshold.
Blood oxygen levels between 95% and 100% are considered healthy. If you hit below 80%, you might suffer from compromised heart and brain functionality. There's a risk of respiratory or cardiac arrest after continued low blood oxygen saturation.
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