Parkour is described as a way of training using expressive movement like dancing, with the goal of overcoming obstacles in the environment. It helps practitioners overcome fears and clear their mind while testing their physical limits. However, the risk of injury, especially for those without proper training, is high. The document provides links to several sources on parkour, including magazine articles, a blog, and a Facebook page of a parkour crew, as well as details of an interview with a member of that crew conducted as part of the research.