A Tale Of Two Sleep Trackers

A Tale Of Two Sleep Trackers

The prescription for a good night's sleep is usually six to eight hours of uninterrupted slumber, but if that sleep is light and non-restorative, you might still wake up feeling like a grumpy zombie. Even worse, you won't know why. Luckily, we live in an age where tools to track this elusive act are easily attainable and don't require a night's stay in a hospital.

Photos: amazon.com, Lark and Zeo

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