Track calories burned playing Xbox games with Kinect Playfit.
Now you can track how many calories burned while playing certain Xbox enabled Kinect Games. Track your stats daily, weekly, and monthly. See how you stack up against your friends or the global Xbox LIVE Community by viewing the leaderboards. If you don’t see a game Kinect Playfit supports, Microsoft has said that they will be adding more as time goes on.
To find this app, it is located in Kinect Central on your Xbox 360 Dashboard.