WASHINGTON (CBSDC) — Sex may play a bigger part in success than you’d think.

The Moscow Times reports that a new study published in “Quartz,” has found a link between sex and success at the World Cup.

The study says that all of World Cup teams that imposed a ban on sex failed to advance past the Round of 16 in the knockout stage of the event.

Russia and Bosnia and Herzegovina, both of which banned sex during the World Cup, each fell short and were eliminated in the group stage of the competition. Mexico and Chile also banned sex for their players, and both teams were eliminated in the Round of 16. Mexico lost to the Netherlands while Chile fell to host Brazil.

Meanwhile, teams such as Brazil, Costa Rica, France, and the Netherlands that have not banned sex or have only placed minor restrictions on sex each advanced to at least the quarterfinals.

Restrictions on sex range from team to team. Brazil, for instance, has a restriction that says players may have sex but with no “acrobatics.” Costa Rica, on the other hand, allows players to have sex as long as it’s “not all night.”

While there has been no scientific evidence validating that sex adversely affects athletic performance, many coaches and teams still believe that it produces tired, unfocused players.

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