Some couples were given mundane tasks, while others took part in a silly exercise in which they were tied together and asked to crawl on MATS, pushing a foam cylinder with their heads.

有些夫妇分配到普通的任务，但另有一部分参与了一个看似“愚蠢”的测试，比如两人捆绑在一起，爬垫子，用头推倒泡沫圆柱等等。

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First, it's all in the numbers of people who share equipment, exercise mats, lockers and showers that enable germs to travel to and from many an athlete.

CNN: Germ warfare moves to the gym