I'm curious what you people think Nintendo is going to do with that health stuff. I have no clue. What do you think?

That's the question here. But it is no videogame system I assume. I'm interested how that turns out, although it's probaby not a product for me. but if it does pay for my Zelda, then YAY.

Mario?

I would assume they would use Wii Fit.

So, you can carry, but is not mobile, neither handheld, neither wearable.
Maybe something like tamagochi, wii fit meter?
at least nintendogs, fit measures, brain training, and etc, all can be in such device.

Maybe it will be something like an app for your smartphone/3ds or something like the kinect cause its non-wearable... Like I wish we had more info cause wtf does non-wearable mean? :L

Wii fit and party games. Pretty much what they did with the Wii.

The wight loss market is huge. Nintendo has gotten quite a bit from it with the Wii and its a good idea for them to tap that again. Its an incredibly lucrative market.

It could be an app, although Nintendo has said that it was going to be some sort of hardware that will improve your health, and is not something they have done before on their existing platform (so no Wii Fit/Balance Board, but something different?)

It's also probably not something like kinect, because :

During the presentation's Q&A, Iwata claimed the device "is not necessarily something you will use in the living room."
http://www.ign.com/articles/2014/01/30/nintendo-on-its-future

Medical stuff and health care stuff I guess, like, something to measure blood pressure and a balance board made for adults.