Prime Group, owner of the 39-story TechnoMart commercial-residential high-rise in Seoul, said 17 middle-aged people were working out to the pop song "The Power" by Snap on July 5 when their movements set the upper floors of the tower shaking for 10 minutes, according to a report from the Korea JoongAng Daily.Hysterical!
Scientists recreated the event in the 12th floor gym, according to a report in the Korea Times.
Of course, being there is a reason for that to happen:
“It just happens to be that the vibration cycle caused by Tae Bo collided with the vertical vibration cycle unique to the building,” Chung told the Korea Times. The action amplified the building's vibration and caused the shaking, he said.
In other words, it's a variation to the infamous Tacoma Narrows bridge incident, without the completely collapse of the structure!
Still, I wonder if there will be a different effect if the gym moves to a different floor....