Zumba Fitness

Once you start the game up, go to "Play" and then "Zumba Party" and complete all 4 of the expert classes to unlock this achievement. What I did for all the classes was set my kinect up so I could sit/lay in my bed while the classes were running. You won't fail and you will get credit for completing the class. Once you start a class just sit there for a few minutes and make sure that Kinect is picking you up and then just switch the input on your tv to cable.