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Jillian Michaels uses the CORE Armband from Body Media to measure calorie output. The CORE Armband is the most accurate calorie tracker on the market and much smaller than former models (1/3 the size). In clinical trials, people who used the armband lost three times as much weight as those in the control group. $179.00 without display, $228.00 with display (as shown).
Nike FuelBand - measures daily activity -syncs to smart phone... hmmm.... supposed to 'rival' the Motoactv...
Reasons You're Not Waking Up Energized