Bicycles are very popular today in many countries. Many
people use bicycle for exercise. But exercise is only one of the
reasons why bicycles are popular. Another reason is money.
Bicycles are not expensive to buy. They do not need gas to make
them go. In cities, many people like bicycles better than cars.
With a bicycle, they never have to wait in traffic. It is also to find
a place to park. And finally, bicycles do not cause any pollution!