“Bodybuilding is like any other sport. To be successful, you must dedicate yourself 100% to your training, diet, and mental approach.” Arnold Schwarzenegger sums it all up in this legendary golden rule.It creates three focal points of bodybuilding. How you conduct yourself in the gym, on the dining table, and 24/7 in your mind. Arnold advocates feeling the rush of blood, the pump. The foremost sign of overtraining is also the lack of that feeling.