Determined to find a way to help people have a better day after a night out, the researchers recruited 90 brave souls in Germany between the ages of 19 and 40 to drink beer, wine or both. One group drank 2½ pints of beer, followed by four large glasses of wine. The second group drank the four glasses of wine first, then the 2½ pints of beer. A third group drank only beer or only wine. Everyone was kept under medical supervision overnight.