Yeah, there's certainly a reason he's still drinking it. If anything, it's more dangerous. Easy to forget it's not just water. As for bodies looking good, well - he'll just let Cao Pi gloat even if that isn't his intent. Most here don't have the skeletal issue he currently does.

"Suppose so. I'm probably just not cut out for it. Ruling's no goal of mine, never has been. A small command is fine."