Ultimately, it matters little whether players can engage in sex during the World Cup – or hook up all over the Olympic village – but the motley mixture of rules provides a microcosm of what can happen in the absence of solid data. When myths and stereotypes are more influential than research findings, misconceptions get perpetuated. A man who believes he is supposed to be thinking about sex constantly might feel there is something wrong with him if he doesn't. An athlete who believes his team will lose if he engages in sexual activity could become a victim of a self-fulfilling prophecy.

Why not attempt to address these everyday (and night) issues by funding and supporting more and better empirical research on sexuality? It would be a big score – not just for athletes and sex research but an important goal for anyone who believes that sex is a healthy part of life. And there would certainly be no shortage of volunteers to participate in the research.

据英国《卫报》报道，即使世界杯期间球员不该进行任何性行为，作为一个性学研究者，我还是一直在想球员们在这期间有多少性幻想。

今年世界杯期间，球队对于束缚球员性行为的规定各有特色，基本没有证据显示那些规定起到了作用，如今16进8基本已经结束，禁止性行为的球队全部出局，而那些允许在场下“射门”的球队反而昂首挺进8强。

· 哥斯达黎加再夺胜利，在球队接近进入第二轮后球员获准可以有性生活。

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