6000 Mexicans preparing to dance their way into the record books.
A crowd of mostly women flocked to the capital city's Zocalo Square for the world's largest aerobics class.
Having cemented their place in history, organisers hope the participants will continue an active lifestyle.
Local authorities are looking to get people out of their houses to enjoy the great outdoors in the sprawling metropolis.
the record books 世界紀錄記載
sprawling metropolis 不斷向外擴張的城市