Classic bodybuilding is a version of the sport based on the classic physique concept.
To create equal chances, the competitors' bodyweight is limited according to their body height, following a special IFBB formula for each body height category.
Since muscle mass is limited, special attention is paid to the overall view of the physique, body proportions and lines, muscle shape and condition, including density, body fat level, definition and details.
These values are assessed by the judges during rounds one and three. In round two, like in bodybuilding, free posing routines are performed to music of the athletes' choice.
There are two assessments rounds, with the same rules as in bodybuilding.