Being in the fitness and nutrition business, the first thing we look at with new superhero castings is the actor's physique and how they will physically prepare for the role. We speculate about the kind of training will they do and what their final look will be. Corenswet will no doubt be training hard to fill those red and blue tights, as Superman is very muscular and strong. What kind of training routine would take his physique to an invincible level?