Parkour (sometimes abbreviated to PK) or l’art du déplacement (English: the art of movement) is an activity with the aim of moving from one point to another as efficiently and quickly as possible, using principally the abilities of the human body. It is meant to help one overcome obstacles, which can be anything in the surrounding environment—from branches and rocks to rails and concrete walls—and can be practised in both rural and urban areas. Parkour practitioners are referred to as traceurs, or traceuses for females.
Founded by David Belle in France, parkour focuses on practising efficient movements to develop one’s body and mind to be able to overcome obstacles in an emergency.
The term free running was coined during the filming of Jump London, as a way to present parkour to the English-speaking world. However, free running and parkour are separate, distinct concepts—a distinction which is often missed due to the aesthetic similarities. Parkour as a discipline comprises efficiency, whilst free running embodies complete freedom of movement—and often includes many acrobatic maneuvers.
In Brazil, the movement has taken off with the group Le Parkour Brazil (their site translated).
Below, you will find a good video example of Parkour Brazil.