Quartz said that researchers has already debunked the theory about sex as an influential physical factor to an athlete's performance. On the other hand, coaches remained to be unconvinced about the science dismissing the theory.
Chrysovalantis Vasilakis of the University of Warwick has reportedly found in a study of the increased globalization of soccer that by relaxing the rules on player migration endows significant benefits to those who have decided to move and for those who chose to stay.
Even if authorities have said that the stadium could be put to use for local games after the World Cup, football matches in Manaus could attract a thousand people at most, which would not make it an economical decision to host a local match there, the Guardian said.
According to police, around 400 had hit the street in the northeastern Brazil state of Rio Grande do Norte, threatening US fans who were making their way to the match. Aside from the US flag, the FIFA flag was also burned in protest.
