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https://lifehacker.com/health/how-to-track-sleep-on-apple-watch
How to Track Your Sleep With an Apple Watch | Lifehacker
Mar 6, 2026 - The Apple Watch has a built-in sleep tracker, but it can be hard to find. Here’s how to access it, how to set it up so that it properly records how much sleep...
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https://lifehacker.com/health/what-is-core-sleep-apple-watch
Here's What 'Core Sleep' Really Means, According to Your Apple Watch | Lifehacker
Apr 23, 2026 - One of the most confusing terms you'll see on the Apple Watch is core sleep. Sleep scientists don't use this term, so let's talk about what it means to Apple.
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https://lifehacker.com/health/oura-ring-vs-apple-watch-comparison
Which Is Better: Oura Ring vs. Apple Watch | Lifehacker
Feb 5, 2026 - The Apple Watch vs. the Oura ring: Both track sleep and activity and encourage healthy habits, but in different ways. Here's how to choose the right one for...
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