Just looking at the translated Amazon.co.jp page for this and there is a list of things Wiifit does.
BMI - I guess it asks you to put in your height when you set up your profile, it weighs you (obviously) and comes up with a BMI. Nifty if you like to keep track.
4 Training games - Soccer head butts, Aerobic (hula hoop and dancing), Yoga, and Muscle training (probably core strength exercises involving balance).
Training results graphs and calendar confirmed - Like Wii Fitness.
Trainers advice - This sounds interesting, I wonder what it says/does?
Weight limit of 136kg confirmed, which is pretty impressive. Anyone bigger than that wouldn't be inclined to use it anyway I reckon.
13/12/2007
Wii Fit
Perth, Western Australia