Parkour (abbreviated PK) is a holistic training discipline using movement that developed out of military obstacle course training. Practitioners aim to move quickly and efficiently through their environment using only their bodies and their surroundings to propel themselves, negotiating obstacles in between. They try to maintain as much momentum as possible without being unsafe. Parkour can include running, climbing, swinging, vaulting, jumping, rolling, quadrupedal movement and more, if they are the most suitable movements for the situation.
Parkour is non-competitive. It may be performed on an obstacle course, but is usually practised in a creative (and sometimes playful) reinterpretation or subversion of urban spaces. Parkour involves 'seeing' one's environment in a new way, and imagining the potentialities for movement around it.
Developed by Raymond Belle, David Belle, Sébastien Foucan and other members of the original Yamakasi group in the late 1980s, Parkour became popular in the late 1990s and 2000s through films, documentaries and advertisements featuring these practitioners and others.