In the middle ages, beer was safer to drink than water! People chose to drink beer over water because the water was too contaminated. The alcohol in the beer made it safer to drink as it killed any impurities present.
Workers who built the pyramids of Giza worked under the influence. Archeologists discovered that they would drink up to 4 litres of beer everyday. Whew, doesn't that make you thirsty? You can cool down with a crisp, cold Witlinger Wheat Ale.