Nintendo launched an official site for Wii Fit and it showcases four of the 40+ training exercises packaged on the disc. Most of the ones on the page are were at E3 like the soccer game where you guard a goal by lifting the opposite leg up, the hula hoop catching game and yoga.
The new addition has players place their on the board to do push ups. Wii Fit's balance board senses the weight change when you push down on the board to push yourself up. The goal is to get the marker in the green meter. I like the concept of this game, not because I need help doing push ups, but I got to hand it to Nintendo for thinking of other ways to use the balance board besides having players stand on it.