BC: Body fighting in fitness generally refers to Laimei fighting, which is a kind of high-intensity intermittent exercise, including boxing, taekwondo, karate and Muay Thai.

Bodycombat is a fast-paced, medium-high intensity and repeated aerobic exercise.

But it's not just short for boxing. Bc also moves in a straight line at a uniform speed. The position of the particle is expressed by the distance from the origin and coordinate X.