In karate, the term tsuki (突き) refers to punching techniques fundamental to the art's striking repertoire. These punches are typically executed by forming a proper fist (seiken) and delivering strikes with the first two knuckles. Among the various tsuki techniques, the choku-zuki (直突き), or straight punch, serves as a foundational movement taught to beginners.

Heiko-dachi (平行立ち), or “parallel stance,” is a fundamental posture used primarily as a ready stance before executing techniques or katas. In this stance, the feet are positioned shoulder-width apart, with the outer edges parallel and toes pointing straight forward. The weight distribution is even across both feet, knees are slightly bent, and the back remains straight. This stance promotes alertness and stability, serving as a neutral position from which various movements can commence. ​