There’s an expression about knowing just enough to be dangerous. In the case of sleep science, Apple may know just enough to disappoint. In 2016, it introduced an iOS feature (later added to MacOS) ...
We all know that our iPhones can keep us awake at night — that "one last YouTube video" can turn into an hour-long marathon that gets us into bed way too late. But that's not all that's keeping us up.
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