Everyone has heard the old phrase, “it's just like riding a bike.” It's a phrase we associate with things that come second nature or use to express the ease of doing something.

bicycle, two-wheeled steerable machine that is pedaled by the rider's feet. On a standard bicycle the wheels are mounted in-line in a metal frame, with the front wheel held in a rotatable fork. The rider sits on a saddle and steers by leaning and turning handlebars that are attached to the fork.

A bicycle (or bike) is a small, human powered land vehicle with a seat, two wheels, two pedals, and a metal chain connected to cogs on the pedals and rear wheel. A frame gives the bike strength, and the other parts are attached to the frame.

We've all heard the saying “It's just like riding a bike.” It refers to the concept that once you learn certain things, you never forget and the required skills will immediately or quickly come back to you when needed.