What does it take to get genuinely strong, healthy, and creatively alive in your late 50s — while having one of the most demanding jobs in Hollywood?

Brian Koppelman is the writer behind Rounders, Ocean’s 13, and the seven-season hit show Billions. He also helped discover and promote the singer songwriter Tracy Chapman. At 57, he walked off a tennis court mid-match, certain he was about to faint, and decided to completely rebuild his body. Three years later he’s deadlifting 300 pounds, racing up seven flights of stairs with a weighted pack, and producing some of the sharpest creative work of his career.

Two Percent is hosted by Michael Easter. Today’s episode was produced by Joey Fischground, Robbie Hiser, Dana Brawer and Julia Nutter. From Kaleidoscope, our executive producers are Mangesh Hattikudur and Kate Osborn and Julia Nutter. From iHeart, our executive producers are Katrina Norvell and Nikki Ettore. Our Head of Video is Maria Paz Mendez Hodes. This episode was edited by Ryan Mulhern. Our theme music is by the Heater Manager.