David Corenswet recently reflected on his portrayal of Superman in James Gunn's upcoming reboot and how his character compares to other iconic superheroes like Batman and Spider-Man. In a recent interview,

Corenswet's physical trainer breaks down the routine that helped the formerly svelte actor put on 40 pounds of muscle—and how he got Nicholas Hoult prepped for Lex Luthor.

Corenswet prepares to leave his relative anonymity behind as he steps into the red boots of the most popular superhero of all time.