Don't drink your own urine
I read in one thread they thought Aron drank his own urine, I don't recall that he did.
My understanding is urine is high in salt content, that's one way our body ejects excess salt.
So to drink it means we're actually dehydrating ourselves, as too much salt compared to water is being ingested.
So if you're dying of thirst, don't drink you're urine.
It's the same reason you don't drink oceanic salt water when you're dying of thirst, unless you want to speed up your death.