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The wife of Portugal goalkeeper Rui Patricio believes the secret to success for the team at the World Cup involves letting the players masturbate pre-game.
Vera Ribeiro, a qualified psychologist who specialises in sexual issues, has a book out called 'Manual of Seduction', which focuses on the importance of footballers' love lives.
In that book, Ribeiro states that those who play with themselves will reduce anxiety and stress prior to a game and that performance levels will improve as a result.
She also says managers banning their players from having sex before games isn't the correct call.
Dr Ribeiro claims that "nothing positive can come from abstinence" in the book and continued her suggestions on Portuguese TV when plugging
"The football player should not abstain from having sex before games, but we also know that in terms of routine they are not in contact with families either.
"We cannot associate sports performance with the occurrence of sex."
One man who has a view in line with Ribeiro's suggestion is legendary Brazilian player Romario, known for his wild lifestyle.
In fact, the former Barcelona ace has urged the Selecao's No.9 Gabriel Jesus to have plenty of intercourse to get in the zone for his debut World Cup.
"Have enough sex is one piece of advice - as is making the most you can of your days off," he is quoted as saying.
"And, of course, you must concentrate on match days and during the games. I believe Jesus is quite aware of his football and what it represents for the Brazilian nation. He has to arrive at the World Cup and score a goal. That's the most important thing.
"It is good that he is playing in Europe because maybe 80 or 90 percent of the best players in the world play there and he will have faced them already.
"But the first thing I advise him to do is have lots of good sex."
Germany boss Joachim Low has a difference stance though, with reports saying he has banned his defending champions from partaking in sexual activity before games in Russia.
(h/t The Mirror)