This is a clip from a Japanese game show. The guy in it goes through a sick obstacle course that demands Cardiovascular/respiratory endurance, Stamina, Strength, Flexibility, Power, Speed, Coordination, Agility, Balance, & Accuracy. All of which are listed as the "10 general physical skills" as outlined by CrossFit. What makes them unique here is that it is done outside the box AND even outside the box of CrossFit. To perform these skills under constant variables such as various terrains, weather conditions, with spontaneity, and so much more can be called nothing less than a art. There certainly is a art to parkour. Those who have experienced it will agree.