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Jawbone tracks big cities' 'Zzz's

Jawbone collects fitness data - just one of the many, many kinds of data about you.

Here's a neat confluence of my lousy night's sleep last night and the rise of big data and wearable technology.

Thanks to the Wall Street Journal and data provided by Jawbone, makers of one of those fitness bracelets, we now know all kinds of stuff.  Like which city's residents get the most sleep: that'd be Melbourne, Australia at seven hours and five minutes a night.

The least? Tokyo at five hours and 45 minutes.

About the author

Kai Ryssdal is the host and senior editor of Marketplace, public radio’s program on business and the economy.

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