Do you think it's possible for an adult (in their 20s) to learn to ride a bicycle for the first time? I've heard that it is a lot more difficult than learning as a child, in a similar way to learning a 2nd language, etc. An adult brain is harder to train than a child's.
Plus, it seems like falling is going to hurt a lot more than it would when you're a lot closer to the ground to begin with (and there's no way you could get away with training wheels!).
Anyone ever known someone who's done this successfully?