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Summary A Seoul shopping mall was shaken due to a gym exercises.
The 39-story shopping mall, TechnoMart, in Seoul was shaken due to a group of people in a 12th floor gym performing Tae Bo exercise, a mixture of boxing and taekwondo. Hundreds of people evacuated the complex as people on the upper part of the building felt the building rocking up and down for about 10 minutes. Experts demonstrated how a group of middle-aged people exercising can shake the 39-story skyscraper.Group dance largely influenced vibrations in the upper part of the 39-story building which raised concerns about public safety. About 50,000 people usually visit the complex each day who expressed their concerns about the buildings safety.
