Bicycle is a long-standing invention. Officially, it was invented in 1817 by the German professor Baron Karl von Dresen as " machine for run." His invention had no pedals, riders had to start from the ground underfoot. Blacksmith Kirkpatrick Macmillan put pedals and saddle on the bike, but his invention remains obscure. Then bike evolved slightly, he got a better frame, tires and various " body kits ": brakes, lights, shock absorbers, speedometers, etc.

Today citizens commute to work by car, even if the distance is not very significant. But if people would prefer a bike to car, the air in the cities will be much cleaner, and the people themselves will become much healthier as cycling trains heart.

Bicycles are different: for city riding, for rough terrain, for high-speed riding. The main difference is in the tires: wide tires with low pressure will allow to ride off road, but narrow with a lot of pressure to help develop greater speed. So, on bicycle racing cyclists reach speeds up to 250 km/h.

If you are going to buy a bike, then you need to think about what you need it for. If you will ride it to work and shop, the best choice is a city bike. It has narrow wheels, high frame and trunk. Note the presence of shock absorbers — they would smooth shocks when driving over curbs. Tyre pressure should be checked with this bike before each ride.

For driving on the forest it is worth taking a mountain bike. It has wide wheels, sturdy frame and shock absorbers. The pressure can be checked once a week.

For a quick ride on bicycle paths need lightweight sports bike. It accelerates quickly and has a multi — gear box. Wisely using it you will spend less force on driving.

Lovers of extreme sports like bikes for tricks — "BMX". They have no suspension and gearbox, they are very light and are designed for jumps, somersaults and other acrobatic exercises.

I have made my decision, it is your turn now.