Reuters probed deeper:
Brazil's squad have been given days off after some games and manager Luiz Felipe Scolari said he did not mind if they had "normal sex" but warned them off anything too "acrobatic".
Scolari's strategy seems to be working, with Brazil through to face Colombia on Friday as they attempt to lift a record sixth World Cup, and is in keeping with the hosts' love of love.
Former Brazil forward Romario said having sex before a game helped him relax and play better while the late Socrates, who had six children, wrote that results were "exceptional" when he had sex the night before and the morning after a game.
"Sex isn't bad for you before or after games," said ex-Corinthians and Porto striker Casagrande. "Only during."
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