About Brain Age, I don't think there's been any conclusive study but I believe there's a good number of people that continually doing brain exercises helps you be more alert and may help against Alzheimer's. I don't think Nintendo has ever come out and said "buy Brain Age: you won't get Alzheimer's," rather than just saying it will help keep you sharp. It is known that doing brain exercises like crossword puzzles, number memory, and other things do help you stay more focused and more alert and does help you remember things more by just being active. Your mother could probably get the same help by buying a big book of crosswords but that's not nearly as fun as seeing the floating head is it?
As for Wii Fit, from what I've seen it does have some minigames that aren't really exercises(soccerball head but and hula-hoop), but the rest seem to be aerobic workouts and yoga exercises. Maybe we're just looking at different videos and reading different articles.
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And I thought you left?
