Smartwatches from the likes of Garmin and Apple now come with some impressive sleep-tracking skills – and a pair of new studies from the two companies show the wearables can also give us fascinating insights into our collective shut-eye. The short answer? Most of us could definitely be sleeping better.The new data from Garmin’s Sleep Score study (opens in new tab) and the ‘sleep health’ component of the Apple Heart & Movement Study (opens in new tab) has tracked the
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