Taylor Swift's workout routine is so brutal that it would make some people throw up while forcing others to lay down on the floor ... so says the pop superstar's trainer Kirk Myers.
Myers revealed to Vogue the singer's killer exercise regimen as he finally embraced his cool title as "Taylor Swift's trainer" after a decade of working with her.
Myers provided a road map on how Taylor prepped for her global "Eras" tour, requiring her to perform for 3 hours and 15 minutes each show.