I’m exhausted. Aren’t you? For an article about how Silicon Valley and other innovators have taken on the challenge of sleeplessness, a $32 billion market once populated mostly by mattress and pharmaceutical companies, I tested but a few of the many hundreds of gadgets, apps, podcasts and other inventions now devoted to a good night’s sleep. As the gizmos grow more elaborate, imbued by ever more exotic technologies, they are creating a ruckus in our bedrooms, and sleep experts advocate a simpler approach.
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