54D, a “human transformation” program founded by former professional soccer player Rodrigo Garduño, isn’t new. It took Mexico by storm in 2012 and the first U.S. location opened in Coral ...

Advertised as “New York’s hardest and most expensive workout class,” 54D — named for its 54-day length — made its Big Apple debut in January, charging $5,400 for the grueling ordeal.

Rise and shine. And burn lots and lots of calories. On Saturday morning, normal humans will have the chance to experience celebrity fave workout 54D. The fitness phenomenon beloved by such workout ...