WELLNESS
06/28/2013 08:59 am ET Updated Aug 28, 2013

The Body Data Craze

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Welcome to my biography, 2013-style. It includes more data points than it possibly could have 20 years ago. And it's part of a national obsession of a people who, literally, number our days. According to a recent nationwide survey for Pew Research Center Internet & American Life Project, 7 out of 10 people self-track regularly--using everything from human memory to a memory stick--some aspect of health for themselves or for someone else.

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