31 Most Amazing iGadgets
BodyMedia FIT CORE Armband ($179)
Think of BodyMedia FIT CORE armband as a wearable personal trainer. The armband, which can be worn on the body or clipped to your clothing, features four sensors that capture mor than 5,000 data points per minute. The device tracks everything from steps taken and calories burned to the quality of your sleep, and free apps for your iOS or Android device help you keep track of your progress.