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In this episode of MythBusters, Jamie and Adam will take a stroll across a bridge to see if the rhythm of soldiers marching together will cause a bridge to collapse. Will the athletes of Stanford University's varsity rowing team be strong enough to pull Jamie up on water skiis behind a fragile rowing eight? Watch where you put your toothbrush, Jamie and Adam will find out if the bacteria from their toilet settles in their toothbrushes. The MythBusters don't just tell the myths, they put them to the test.