system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why does it feel like when you are thirsty, sugar feels like a replacement for something to drink?

Sorry for my bad english. Let me explain;
Some days when I dont drink a lot I start to get really hungry for sugary candy. After I eat it I dont want feel thirsty for a while again. I could live a day without drinking at all but not feeling thirsty because of sugar. How come?
gpt
Fruits contain alot of water.  
Fruits also contain alot of sugar.  
If you couldn't get water directly, fruit would also give you water.  
Your body hasn't learned it can get sugar in candy, it thinks you are getting the sugar from fruit.  
So it thinks you got some of the water in the fruit until your fluid balance tells you other wise.