It’s safe to say that the world has been in awe of Taylor Swift’s level of fitness since the Eras Tour began back in March last year. With each show lasting three hours, it’s no surprise that Taylor needs a rigorous fitness routine to prepare for such a physically challenging tour.   Experts at Mirafit, the fitness equipment supplier, have pieced together a comprehensive guide on how to work out like Taylor Swift.   Cardio  After singing and dancing…