Jillian Michaels' Pocket Trainer 2010

I love this thing because it gives you great exercise,but I like the biggest loser game more because it actually tells you how many calories you are burning from each exercise and/or routine. My step dad actually did a few exercises with me at one point, and he said it was not his favorite. I like it for use with younger kids, like maybe in the range of 3-10 years old.