For kata one has to perform basic movements which are pre-arranged in a sequence. Nunchaku Kata involves these arranged movements which are targeted to hit an imaginary opponent. This Kata is not only about movements but also about how the practitioner can execute the movements a close to perfection as possible with excellent posture and commitment.
I have to get into this one day, but I was put off when I saw my buddy using them and wacking himself on the head with them!
