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 Bicycle, also called bike, 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. 

The feet turn pedals attached to cranks and a 

chainwheel. Power is transmitted by a loop of chain 

connecting the chainwheel to a sprocket on the rear 

wheel. Riding is easily mastered, and bikes can be 

ridden with little effort at 16–24 km (10–15 miles) 

per hour - about four to five times the pace of walking. 

The bicycle is the most efficient means yet devised to 

convert human energy into mobility.

There are many different kinds of bikes like 

[url=http://www.todo-exercisebike.com/spin-bikes/]Spin 

Bikes[/url], [url=http://www.todo-

exercisebike.com/foldable-exercise-bikes/]Foldable 

Exercise Bikes[/url], [url=http://www.todo-

exercisebike.com/foldable-exercise-bikes/magnetic-

exercise-bikes/]Magnetic Exercise Bikes[/url], 

[url=http://www.todo-exercisebike.com/mini-bikes/]Mini 

Bikes[/url](foldable or not), 

[url=http://www.todo-exercisebike.com/magnetic-

bikes/magnetic-upright-bikes/]Magnetic Upright Bikes

[/url] and [url=http://www.todo-

exercisebike.com/magnetic-bikes/magnetic-recumbent-

bikes/]Magnetic Recumbent Bikes[/url].

Bicycles are widely used for transportation, recreation, 

and sport (see cycling). Throughout the world, bicycles 

are essential to moving people and goods in areas where 

there are few automobiles. Globally, there are twice as 

many bicycles as automobiles, and they outsell 

automobiles three to one. The Netherlands, Denmark, and 

Japan actively promote bicycles for shopping and 

commuting. In the United States, bike paths have been 

constructed in many parts of the country, and bicycles 

are encouraged by the United States government as an 

alternative to automobiles.

If you want to exercise in a simple and managable 

method, except for the bike, there is another useful 

epuipment which is the [url=http://www.todo-

exercisebike.com/elliptical-trainers/]elliptical 

trainers.[/url]