Editing Qi (section)

===Martial arts===
{{Main|Neijin}}
Qi is a [[didacticism|didactic]] concept in [[Chinese martial arts|Chinese]], [[Vietnamese martial arts|Vietnamese]], [[Korean martial arts|Korean]], and [[Japanese martial arts]]. Martial qigong is a feature of both internal and external training systems in China<ref name="Wile">{{cite book|last1=Wile|first1=Douglas|title=Lost T'ai-chi Classics from the Late Ch'ing Dynasty |date=1996|publisher=State University of New York Press|location=Albany|isbn=9780791426548}}</ref>{{Page needed|date=January 2017}} and other East Asian cultures.<ref>{{cite book|last1=Bishop|first1=Mark|title=Okinawan Karate: Teachers, Styles and Secret Techniques|date=1989|publisher=A & C Black|location=London|isbn=978-0713656664}}</ref>{{Page needed|date=January 2017}} The most notable of the qi-focused "internal" force (jin) martial arts are [[Baguazhang]], [[Xingyiquan]], [[tai chi]], [[Southern Praying Mantis]], [[Snake Kung Fu]], [[Southern Dragon Kung Fu]], [[Aikido]], [[Kendo]], [[Hapkido]], [[Daitō-ryū Aiki-jūjutsu|Aikijujutsu]], [[Luohan (martial arts)|Luohanquan]], and [[Liuhebafa]].

Demonstrations of qi or ''ki'' are popular in some [[martial arts]] and may include the unraisable body, the unbendable arm, and other feats of power. These feats can be explained using [[biomechanics]] and physics.<ref>{{cite web|last1=James|first1=Daniel Arthur|title=Unraisable Body: The Physics of Martial Arts|url=https://www.researchgate.net/publication/29458989|publisher=Sports Medicine Australia|access-date=5 January 2017|date=27 June 2003}}</ref>