system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why does water taste delicious and refreshing, but watered-down drinks taste disgusting?
gpt
You're used to the "taste" of water, and you expect what you get when you drink it.
Likewise, you're used to the flavor and sweetness of sodas/juices/teas you get in stores. Your body likes sugar. If you dilute it, your body isn't used to the reduced sweetness and it won't taste as good. If you drink a diluted stuff for a while, you could get used to it.