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Calvin hops on his bicycle again. Hobbes tells him that people say once you've learned to ride, you never forget. Calvin believes that. After he again crashes, he says it works on the same principle as electroshock therapy.

I doubt that people never forget to ride a bicycle. If my grandfather, who hasn't ridden a bicycle in over 30 years, were to hop on one and start riding, I would be immensely surprised. Are there any sources that either confirm or deny that learning to ride a bike is permanent?

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    People who experience physical brain damage (e.g., as the result of a serious head injury) could lose certain memories or skills. It can also happen with people who've lost a portion of their brain tissue (e.g., brain surgery to remove a tumour) or have experienced a stroke. – Randolf Richardson Jun 1 '11 at 5:52
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    I went for 5-10 years without riding a bike, and instantly started riding with no problems. Just an anecdote, not an answer. – Apreche Jun 1 '11 at 11:56
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    Another personal anecdote - didn't ride a bike quite a few years, then started riding a motorcycle. No problems. Well, I did crash a couple years later, but that was unrelated to forgetting how to ride. :/ – Florin Andrei Jul 15 '11 at 23:33
  • I understood it is the cerebellum (behind and underneath the brain, close to the brain stem) that learns these physical coordination skills, and there's really no consciousness involved. Like walking, it doesn't seem like something you can forget, unless, as @Randolf suggests, part of your brain is removed. I've taught riding - if you fall right, turn right - if left, turn left. It seems like once the cerebellum gets the idea, it becomes automatic. – Mike Dunlavey Jul 16 '11 at 0:45
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    Last year I rode a bike after 18 years to show my son, and it took less than 5 seconds to get oriented. – CMR Jul 17 '11 at 16:34
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I had come across this article about a research on this:

http://www.telegraph.co.uk/science/science-news/3350217/Why-you-never-forget-how-to-ride-a-bike.html

It is more like you pick up the unused skills quickly.

I associate things like this to muscle memory. Also, when riding a bike or driving a car, sometimes you might actually be thinking about something else ( I have done it many times, though dangerous! ) After you reach home, you have very little recollection of the ride. You just drive!

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