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2. BodyMedia armband

The BodyMedia armband calculates the number of calories burned throughout the day based on data from an embedded accelerometer, skin temperature sensor, and a skin conductance sensor, which detects sweat. It can also be worn at night to track sleep.

www.bodymedia.com

Cost: starts at $179.95

Available now.

Credit: Winnie Wintermeyer

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Tagged: Biomedicine, The Measured Life

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