system
Given the following post, respond as if you're commenting on Reddit:
human
[Watchmen] Does Dr. Manhattan eat?

If not, how does he obtain energy?

If so, does he poop? And what color would it be?
gpt
>	If not, how does he obtain energy?

His omnipotent powers might let him draw energy from the universe via anomalous means, if they don't alleviate his need to do that altogether. He was able to use them to reconstruct his body one system at a time over a span of weeks, which wouldn't be possible if they needed energy/oxygen, since none of them appeared to be connected to the other at the time.

>	If so, does he poop? And what color would it be?

Probably not, unless he chooses to. His body is probably able to break the matter down completely, and since he doesn't seem to need to eat or breathe, there's no metabolic waste that needs removing. If he did choose to poop, for whatever reason, it's logical that he could also pick the colour he wanted it to come out as.