In Muay Thai, you are taught to swing your right and left arm in opposite directions as a push-pull effect to generate additional power. In Karate and TKD, however, jazzy arms are penalised in the evaluation of the kick. From a TKD perspective, how is the practitioner supposed to generate forward momentum if not by the aid of the arms? This is not the most extreme example, but it is noticeably more flinchy than textbook deliveries. My balance is not really affected in this kick whether I use my arms or not, but it doesn’t feel natural without it, and it slows me down if I don't do it. I also feel that having an arm in front of my face should be preferrable than by my rib or waist.