What is NikeFuel and how is it calculated on Nike+?

NikeFuel is a proprietary metric developed by Nike as a way to measure and compare different activities and levels of exertion. It serves as a universal unit, allowing users to track their overall fitness level without being tied to a specific workout or sport. NikeFuel is calculated based on the user's height, weight, age, and gender, as well as the speed and intensity of their movements. This data is captured by Nike+ devices, such as fitness trackers or the Nike+ app, which utilize various sensors and algorithms to monitor and quantify the user's activity. The calculations take into account factors like steps taken, duration of activity, and intensity, ultimately assigning a NikeFuel score to provide a comprehensive measurement of the user's effort and progress.