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Walking is a natural mode of locomotion. It involves moving in support of alternative on the legs, standing still and having at least one support point in contact with the ground, otherwise it is running.

In humans, walking is one of the main means of transport and is one of the modes known as tiring, with bicycles, scooters or roller, as opposed to motorized transportation. It can also be practiced as a sport or hobby.

Walking, separate from the crawling is the method of moving bipeds. It was used more or less adroit at the onset of early hominids, there are about 2 million years. This mode of travel allowed members before release, gradually allowing the manipulation of tools, simultaneously walking. Therefore, walking is no longer a simple means of transport, it becomes the means by which man projects his action. It supports and the evolution of mankind by creating the conditions for the development of his intellectual faculties.

In functional terms, walking is so competitive with a car available to everyone, but also cycling and public transport. However, there still remains many walkers walk the walk, stroll, and lovers of nature, mushroom hunters, hikers and other golfers.

Standing and the fact that the movement of the body mass is then it is only supported by one member implies the operation of the sense of balance. The walk is defined by the fact that there is always at least one ground support, as opposed to running, in which he may not have ground support at some point.

Walking is generated by the forward tilt of the body when standing, causing a movement of a fall, caught by the projection of one leg forward. In more detail, the way based on a mechanism consisting of the double pendulum leg and arm. The basin is in fact naturally subject to rotation when the leg is thrown forward because this movement is supported on the opposite leg. This is to counteract this rotation as the arms make a reverse movement to the legs. Thus, the pool remains the same axis, allowing to walk straight. Then, to make up for falling motion as long as walking, the back leg is in turn projected forward using its potential energy, which saves the effort, while the arms do the opposite movement, also using their potential energy. The march was stopped by a recovery of the body.

Hiking is an outdoor activity which is a practice that seeks to walk a route, marked or not. The walk is both an opportunity to explore and a form of exercise.