There are lots of video games on the market that are advertised as a fun way to get fit. "Keep your feet behind you." Consumer Reports checked out five: Nike Plus Kinect Training, Your Shape Fitness Evolved 2013, Just Dance 4, U-F-C Trainer and Zumba Core. They cost anywhere from 20 to 50 dollars. Tester Matt Ferretti assessed the workout the games provide, using a monitor to measure his heart rate. "All the games aren't equally effective. Some of them are a lot more strenuous than others and provide a real fitness challenge, whereas some of them are more just party games and really don't provide a great workout." Nike Plus Kinect Training and Your Shape will give you tougher workouts, while Just Dance 4 is less, well, grueling. The gaming console you use can also make a difference in how much of a workout you get. Matt Ferretti "The Xbox is going to be the most effective for these types of games, because using the Kinect, the camera can actually track your full body's movements, whereas with the Wii U or the Playstation 3, it can only see the controller, not your full body. So it's easier to kind of cheat the system, and it's not tracking your body as accurately." If you're looking for a game that can give you a tough workout, try Nike Plus Kinect Training. "Stay focused and balanced." For a good cardio workout that also provides some fun, Consumer Reports recommends Zumba Core. The quick dance steps get your heart rate up - and keep it interesting. ."