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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://www.polygon.com/marathon-durandal-interview/
What Marathon's AI quote Easter egg really means according to Bungie
Apr 15, 2026 - Bungie explains the meaning behind Marathon’s most famous quote and how it connects to Durandal, AI rampancy, and the new game’s core loop.
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https://au.lifehacker.com/sleep/6941/feature/its-time-to-learn-what-core-sleep-actually-is
Here's What 'Core Sleep' Really Means, According to Your Apple Watch
Sleep scientists have one meaning for this term. Your Apple Watch has another.
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