Its judges by rounds prejudging is the symmetry & muscularity rounds and then the posing rounds , the lowest scores win , perfect score is straight 5's ! All rounds are physique rounds in that even in the symmetry round , symmetry is NOT judged as a separate and distinct element separate from the others . usually the contest is won at the prejudging and the posing rounds almost never determine the finally outcome of a contest although is it has happened , especially in very close contests .