Wii Fit uses a unique platform peripheral called the Wii Balance Board that can measure a user's weight and their center of gravity, and calculate their body mass index based on the user's height.

Wii Fit allows you to install the Wii Fit Channel straight to the Wii Menu, which allows users to compare fitness results and perform a Body Test without inserting the game disc. The Wii Fit Channel will also let you know when your last body test was taken right on the Wii Menu.

The...