When it came to making Creed 2 nothing was easy. Behind the scenes things were extremely hard, specially the training that both creed and drago had to go trough. Both of them had to go through some intense training to get to the level of what they needed to be. The amount of workouts and the specific food they were allowed to consume  is something crazy. Many people would not do this unless you got paid for. They had several workouts during the day, three meals tortal and had to have a total of 8 to 9 hours of sleep because otherwise there were going to be able to function.at the end of the movie both of the actors were very proud of where they were after the training.