Zumba Fitness

Unfortunately, single rountines do not count towards this achievement. You'll obtain this achievement while completing all the classes you need to for other achievements. If you really wanted to speed this up, you could just do 20 minute classes over and over. If you don't want to dance for them, set up your kinect so that you can sit and or lay down. Then you're free to do whatever you want. Change the input and watch tv, sit on your computer, read, etc.