Bodybuilding for the Beginner or Advance is the same thing "Lifting Weights to change your appearance."
However, for the "Competitive Bodybuilder, the one muscle that needs the most changing is the Mind.
When working out, we think of how the muscle feels and imagine what it will look like weeks and moths down the road. To get there, we challenge ourselves, our discipline, our drive and will to push beyond our expectations to rival the bet of what we've seen.