LAS VEGAS — If there’s a town that fights harder to keep you from getting a good night’s sleep than this one, I sure haven’t found it. Which may help explain why the sleep-tech collection of exhibits at the massive CES trade show here has become so popular.

Companies aren’t sleeping on the growing popularity of sleep tech. Although total CES exhibit space is roughly flat from last year, the sleep-tech section has swelled 22 percent, making it one of the fastest-growing concentrations in the hot digital health, wellness and fitness area.

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