I know what is in your mind. You think that Treadmill is for exercising and definitely, you are right! I bet you've seen a lot of these in the gym.

A treadmill is an exercise machine for running or walking at the same place. This machine provides a moving platform with a wide Conveyor belt and an electric motor or a flywheel. The belt moves to the rear allowing a person to walk or run an equal, and necessarily opposite, velocity. People who regularly use a treadmill can increase their endurance, improve cardiovascular system , strength, and can make you physically fit.

Anyway, I know 2 kinds of Treadmills... fix and the other one is  folding type. The folding type is much cheaper and space-saver while the fix type is more reliable,durable and have more functionality than folding type.

If I were to choose, I would pick the fix type one because of its functionality. Both treadmills are not cheap ( I mean, so cheap) but there are store where you can Buy Cheap Treadmills. ^^