People talk about bike riding when they want to remind us that some things, once learned, are not forgotten.
What they don’t mention is how we learned. No one learns to ride a bike from a book, or even a video.
You learn by doing it.
Actually, by not doing it. You learn by doing it wrong, by falling off, by getting back on, by doing it again.
PS this approach works for lots of things, not just bikes. Most things, in fact.