system
Given the following post, respond as if you're commenting on Reddit:
human
[DC] Does Superman have to work for his strength?

Let's say superman just stopped everything and he ate crap food for a few months would he lose muscle mass and get fat? If this happens will he get weaker?
gpt
It depends, but in most versions no; his strength isn't a function of his muscles, its sort of an energy field, and his perfect physique is somehow automatic. It's all expressly a function of his superpowers in some way or another.

He does, however, seek out *combat training,* because in the DCU, a really good martial artist can hold their own against a person who has infinite strength and no idea how to use it. He's often shown to need to practice to get fine control with his flight, as well.