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It claims to help you fall asleep by changing your brainwaves—but does it actually work?

Cove is a wearable device that promises to reduce your stress and improve your sleep in just 20 minutes a day with no effort on your behalf, which may just be too good to be true. Chances are, you ...

Welcome to Retail Therapy by Prevention! In this series, our editors provide thoughtful, honest reviews of what we’ve been testing lately that we want you to know about—because we refuse to keep these ...