There is a Xbox fitness app that has a pretty good variety of workouts and is free till Dec 2014, I think. Supposedly tracks your heart rate and performance with Kinect. I did look it over but haven't tried it out yet.
Just Dance 2014 is out if you call that a workout game.
There's Xbox One Fitness app and there's Just Dance 2014. So far these are the fitness games to get at the moment for the Xbox One. These games will have your shake that butt to burn off the fat and raise the heart rate. Glad to know you're striving to be a fit person. Keep it up!