Originally Posted by JTJet
I think the sugar and caffeine give a sudden spike in energy.
That would be my guess. Years ago I was at a minor-league baseball game, and the stadium was designed in such a way that fans could lean over and talk to the pitchers as they warmed up in the bullpen. One of the players had gotten himself a cup of coffee(!) and I was teasing him about why wasn't he drinking Gatorade or some other sports drink. His answer: the caffiene "enhances my performance."