that when European players learn of the concentracao "they think it's crazy".
Even in Brazil, the practice has long been considered anachronistic. In the early 1980s, Corinthians midfielder Socrates called it a "notorious aberration" and the then medical student organised shifts the day before a match to avoid being involved.
He led his team mates to vote against the practice and they rejected it for several years during a period known as Corinthians Democracy. However, when he left the club in 1984 the concentracao returned.
Other players have legendary tales of escaping the bubble.
Garrincha sneaked out of the Botafogo team hotel during a 1959 tour to Sweden, and nine months later was rewarded with a son.
Renato Gaucho missed out on the 1986 World Cup after being caught partying on the eve of the tournament.
Romario and a young Ronaldo left Brazil's team base one night during a Copa America tournament. After scaling a wall, Ronaldo was surprised to find Romario had arranged a taxi to take them to a nightclub. "It was mega-professional," he joked years later.
Nevertheless, many players acknowledge the practice does serve a purpose.
"The concentracao allows the team to be together, to talk over the game, to watch videos of opponents, and to relax," said Moises Moura, a central defender with Portuguesa whose itinerant career has taken him to clubs in Portugal, Russia, Qatar and China. "These kind of things keep you focused on the game."
But he added: "In Brazil, where there are two games a week almost every week, there is a certain attrition.
"You spend more time with your team mates than with your family. Players need downtime to get football out of their heads and take the pressure off."
Other players said some Brazilians are not responsible enough to be left to their own devices.
If the team are playing well fans overlook transgressions, but when the results go against them there is a backlash.
Brazilian supporters regularly harass and abuse players and sometimes even attack them when the team is struggling.
Corinthians fans recently chanted slogans against Romarinho after he was spotted socialising. Fans at Vasco did likewise with Rafael Vaz in