system
Given the following post, respond as if you're commenting on Reddit:
human
Can Superman get fat?

What I mean to ask is: If Superman didn't work out, didn't move around a lot, ate a ton, etc. could he get out of shape? He would still have all of his powers, he wouldn't be any less powerful, but could he lose his muscular physique?
gpt
I would be willing to bet he has some form of super metabolism - which would also make him immune to poisons, etc.

In Lois and Clark: The New Adventures of Superman, they point out that Clark eats like an 8 year old but has the body of Hercules.