Nike+ FuelBand app updated with sleep tracking, calibration

Nike has updated the Nike+ FuelBand app for iOS, the app designed to work with Nike's wildly popular wristband activity tracker and fitness monitor.

New to the 2.1 release is the ability to track when and how long you sleep - the information is recorded on Nike+ Sessions. You can also calibrate your Cycling, Yoga and Training sessions after your workout. You can also now more easily cheer a friend when they share a session to a Group. Bug fixes and other improvements have also been made.

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