Growing up, people would ask me if during the Ramadan fast, I could at least have a drink of water. To this I would I would reply in the negative. The Ramadan fast precludes the luckless observer from both food and drink.
It is a curious thing that so many non-Muslims do not know this given how large of a following Islam has. I can attest that those not familiar with the Islamic faith often express genuine shock when they are given the low-down. Their genuine surprise (and quite often, concern) is a good sign that the Islamic ban on drinking water while fasting is, for all-intents-and-purposes, a bad idea.
This got me thinking how hard a sell this must have been for the prophet Muhammad and left me feeling a bit awe-struck at his ability to sell such an idea in the heart of Arabia and under the loving glow of its scorching sun.