You have probably read my previous post on Fitbit products, including the Fitbit Flex. If you don't know what a Fitbit Flex is, it is a wristband-like device that helps track your activity throughout the day, mainly the steps you've walked. There are a few similar devices on the market, including the Nike Fuelband and the Jawbone UP. I have used the Fitbit Flex for a few months, but I hadn't had a chance to use the Jawbone UP, until now.
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