The Apple Watch can't track sleep natively, but there are a host of third-party apps in the App Store that can turn your watch into a sleep monitor.
The importance of sleep cannot be understated. It plays a critical role in everything from our emotional state to how well we're able to focus throughout the day and our long-term health.
Thanks to the proliferation of devices and apps designed to monitor our sleep, it's easier than ever for anyone with a smartphone to keep track of sleep trends over time.
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