Bodybuilding has become a special term in sports. It refers to a kind of sports activity in which athletes use a variety of sports training methods to win the competition by shaping the body muscle groups. Fitness, the word is not used much now. I understand what you said about fitness. The biggest difference between it and bodybuilding is that its goal is not simply to shape muscle groups, but to reduce fat and weight through physical training, so that the body shape and posture become elegant and beautiful.