Sound familiar? Snook said when she heard that Taylor Swift trained for her record-breaking Eras Tour, she sang every song of the set list—3 hours and 15 minutes—while running. She told Time that she ran “f ast for fast songs, and a jog or a fast walk for slow songs.”

If you didn’t know, Sarah is starring in a production of The Picture of Dorian Gray right now. The show opened on Broadway in March after transferring to NYC from London’s West End. Sarah — who stars as all 26 characters — recently sat down with the New Yorker to chat about her process for the super challenging role. Or roles, plural.