The great arc or arc de cercle (Arch of Hysteria) with its ambivalence of loss of control and domination, is a seductive motif that has a long tradition in the history of art and culture. It can be found in representations of dance and acrobatics, though it also describes physical or psychological illnesses: the overextended (female) body expresses ecstatic rapture or even a psychotic disorder, yet in dance it stands for virtuoso body control...