Taekwondo sparring styles (There is also self defense sparring, which is highly different)

WTF: http://www.youtube.com/watch?v=Htgn24UR4DA
(Courtesy of Leo_E_49)

ITF: http://www.youtube.com/watch?v=jJINTL2dGRA
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"There is no such thing as Perfection... Only excellence"