The rise of the sleep data nerds : ‘The harder you try, the harder it is to sleep’
Wearable sleep trackers may help you measure hours asleep but experts ask how accurate they are, how useful the data is and even what good sleep looks like The first thing Annie and her partner do when they wake up in the morning is ask each other how well they slept. “And I literally say, ‘I’m (…)
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The Guardian
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