Defines the physical strength of the champion, expressed as a percentage. A sportsman with 100% of force is not inevitably twice more extremely than another to 50%, simply the first is at the maximum of its potential and to the second halfway.

A powerful bodybuilder will be able to train a more intense way while being tired less, and will thus progress more easily.

A value of reference, defined at the creation of the bodybuilder, corresponds to the innate nature of the individual and is used as point of balance.
Thus, a sportsman with a reference of 50% will have difficulty in increasing his force to 80%, even if an intense training and certain food can help. On the other hand, if this one drops to 20% following a disease, it will go up quickly towards 50%.
This value of reference is not immutable, the human being able to make progress its nature, but it evolves at very slow rate.