Cycling is a recreational activity or sport, and is a mode of land transportation that uses bicycles. Bicycles were first introduced in the 19th century AD.
Cycling can be done in the morning or evening. But also consider the weather conditions around you. "Cycling in the morning might be better because the weather tends to be fresher, and the intensity of the sun is not too high, so UV radiation can be avoided.
In addition to being healthy for the body, cycling can also help reduce air pollution caused by a lot of motor vehicle fumes.