"After games, it is obligatory to eat at the club. Diet and rest is very important as we have a very intense calendar," Otamendi told Fox Sports Radio in Argentina.
"Pep is demanding about food and also that we study English, as every meeting is in that language. In December I even have an exam.
"Pep has everything in hand so that when the game comes around, everything flows well. It's all designed for the team to function perfectly. Nothing is left to chance."
"Pep is on top of everything, not only talking to us about football but making sure we are OK with our family and things like that," he added.
"When it's time to focus on the game, any joking around stops."
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