If you live in Sydney, cycling is difficult to avoid. But as anyone new to the city can attest, hopping back on a saddle for the first time in years to weave through the narrow busy streets can be a daunting prospect.
Luckily, the old saying holds true: it really is like learning to ride a bike. Many people will have experienced the amazing and long-lasting memory for skills that is often known as "muscle memory".
Muscle memory exists in all kinds of different skills, from sewing, to dancing, to gaming. What is muscle memory? Does it involve changes in structure? What is happening in the brain?