Bing Health and Fitness app for Windows Phone is in Beta, but pre-release version is now available
The app monitors your caloric intake, tracks your exercises and helps you decide what to eat. Information about 300,000 foods are included. Each section like Today, Fitness, Nutrition, Medical, and News is color coded, making it easier to find. If you're the type that finds it hard to do an exercise the right way, some show an expert doing it so that you can see the proper way to do, say, a seated spinal twist.
The app is free and with all of its features, you could find yourself getting into shape quickly.
source: BingHealthandFitness via WPCentral