Swift opened up about how she had to "up my game in terms of physical training" to perform during her nearly two-year "Eras Tour."

According to an InStyle interview, Christian Louboutin replaced each painted leather sole with rubber for the Eras Tour. That way, Swift felt safe and secure during each section of her nearly four-hour performance.

Taylor Swift recalled a bloody backstage quick-change from her Eras Tour in which she skinned her palm and ripped off the "flopping" skin. "Blood’s coming down my hand," the singer says in the third episode of her 'The End of an Era' docuseries.