like riding a bike

I was sick Friday, and didn't go to work. Saturday, still pretty woozy—not up to biking certainly. Sunday I was pretty much better but we went into the city to visit a great-grandmother after church, so that took all my energy for the day. Yesterday I took the car to work because I had to pick up Harvey on my way home. So today was the first biking day in a while, and I wondered how I'd manage it: would I forget how it's done?!

No, it turns out it's the kind of thing you lose; is there a saying to that effect?