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How Apple Watch can know when you’re sick days before actual symptoms

MacDailyNews

Oct 9

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With the new Vitals app, Apple Watch users can quickly view key overnight health metrics, receive alerts when two or more metrics are out of their typical range, and gain better context when it comes to their health.

Apple Watch users have been pleasantly surprised to find that the Vitals app, part of the latest watchOS update, can now predict potential illness. According to Reddit posts, the app has been able to detect signs of illness in users up to three days before they experience symptoms.

Brenna Cooper for LAD Bible:
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Guidance shared on Apple’s user guide stated the feature is available to anyone who lets their watch track their sleep data, with the information then used to gauge your overnight vitals such as heart rate, blood oxygen respiratory rate, wrist temperature and sleep duration. [Note: Blood oxygen monitoring is not available on models sold in the U.S. on or after 18 January 2024.]
In the Reddit user’s case, their watch had recorded a high body temperature.
Users can then opt to turn on notifications if their watch takes measurements outside of their normal range.
Redditors seemed to be in agreement about the app’s usefulness as well, with one person writing on the thread: “this is my favourite watchOS 11 feature,” while a second added: “Kinda insane how useful this feature can be.”

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MacDailyNews Take: Obviously, this is very useful as anyone receiving a notification of, for example, a potential looming cold, etc. could take early steps to take better care of themselves with extra rest, fluid intake, zinc (?), etc.

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