The limits are set by the referees. Those are the ones who are in charge of making sure this is football and not American football.
Coaching Barca involved dedicating all your energy to the team, the club, and the players. And when you see the end is coming, you have to take it in, accept it, and communicate it. There's nothing else you can do.
I've got no interest in justifying myself to a player of mine.
My job is to improve the performance of the team game by game.
