JJ Watt is considered by some to be the best defensive player in football. He attributes that to hard work and intense training. But how does he fuel himself to maintain his enormous physique? He has to eat about 9000 calories per day! When he is not training, he is eating, literally to the point where he says eating is exhausting. Read on to learn more about his diet and how he had to add fats to his lean diet in order to prevent becoming sluggish.