Apple says the sleep apnea notification algorithm was developed using advanced machine learning and an extensive data set of clinical-grade sleep apnea tests.
In general, Apple’s testing found that the watch picked up on any degree of sleep apnea about 66% of the time. It was more accurate at detecting severe bad sleep apnea, correctly alerting users ...
Then, under Sleep Apnea Notifications, tap Set Up and next. It will ask you a few questions, then you tap Done and your notifications are all set. In testing of the watch’s new technology ...