Freerunning is an acrobatic and athletic discipline founded by Sébastien Foucan, who wrote a book on the subject. Foucan started what he termed freerunning in 2003, which he developed as a more inclusive form of parkour. Parkour's development from military obstacle course training lends itself to martial art as a means of weapons avoidance and efficiently closing a distance to an opponent.
Sports may be competitive, may require a degree of skill, especially at higher levels. Sports can be primarily physical (rugby or athletics), primarily mind (chess or go), primarily co-ordination (billiard sports), or primarily animal-supported (equestrian sport).