All the functionality of the Wii Fit with better workouts and continuity to keep the sweat going.
Another great feature is how the activities are measured. Unlike the Wii Fit, the exercises are measured on how well you can balance in the yellow area. Instead, you just have to follow along with the trainer. If you do something wrong, she just corrects you. Overall, the exercises seem more intense, fluid and are measured by what you do not how well you can balance. It's a great way to workout at home.
EA Active provides a great variety of levels and activities to ease your way into working out, or to push your limits. If there is something it's lacking it is a weighing feature like the Body Test from Wii Fit. Fortunatley, if you have the Wii Fit Channel you can skill record progress that way.