The video production is cheesy, but what it's showcasing is pretty amazing:
There's a similar school in Austria and they offer seminars for adults. Apparently it's harder for adults to learn to do this kind of thing because we're so analytical. But something I've been able to do for years is, when I'm having a bout of insomnia and am laying awake in total darkness, I'll practice 'seeing' my hands in front of my face. So this is something I know I can already do, and I've even gone so far as to still be able to do it while wearing a sleep mask. I can't read a book or ride a bike blindfolded, but I don't know. Maybe it's possible to work up to that point.
The mind is such an interesting thing.