response: Bikes have been around since 19th century and there are about a billion of them now
history: I ride a bike. Do you ride for transportation, recreation or sport? I ride for transportation. I see, so you would be called a cyclist or biker or sometimes bicyclist since you are cycling. Yeah, I prefer biker but it all means the same. I think everyone thinks of a bike when talking about cycling. Actually, cycling can also include things like a tricycle or unicycle or some HPV or human-powered vehicle. Oh really? I never knew that, thanks for the info! How long has people used bikes anyway?
knowledge: Bicycles were introduced in the 19th century and now number approximately one billion worldwide.