Q:Serious question: When fasting for Yom Kippur - do you drink fluids and just stay away from food, or do you not eat or drink anything from sunset to sunset?
The way I was brought up, I was allowed to drink water when it was necessary, but no other fluids. Usually, because you weren’t doing much other work, it wasn’t necessary to drink much.
I know it is more hardcore for some Jews and less for others, though. I was raised as a Conservative Jew, if that’s of any help for your question.