A growing number of Americans are using wearable devices to track their daily activity, and another important part of overall health: sleep. NBC's Mark Barger reports.
This week’s Tech Talker produced by Liz McLaughlin for NBC News Channel.
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A growing number of Americans are using wearable devices to track their daily activity, and another important part of overall health: sleep. NBC's Mark Barger reports.
This week’s Tech Talker produced by Liz McLaughlin for NBC News Channel.