system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How can alcoholics survive when they’re not drinking any water and alcohol itself dehydrates you?
gpt
It wouldn’t be surprising to find that some people’s alcoholism looks like drinking a bottle of vodka every night, waking up the next morning to run five miles, and drinking a gallon of water throughout the day. Sure, you’re hydrated. Sure, you’re fit. Yet still, your liver will one day fail due to the addiction. 

I would challenge the original claim that alcoholics don’t drink water; addiction looks very different for different people.