‘body types’ hyperextended joints.
This term describes an abnormal convex curvature of the joints, especially the elbow joint and hands, a quality considered
beautiful in native dancers, and especially developed for this purpose. Technically, it is called in English "hyperextended."
If your elbow is hyperextended, [it] is good to be seen by the people.
If your elbow curves outward, it looks good to the audience.
mag-, -an
to arch; to bow, in fashion similar to a hyperextended arm.
He was even arching [his body from its] being whipped by me.
He even arched his body away from my whipping.