With a 65 percent share of the energy drink market, Red Bull certainly has done their research. After doing a little of our own, Reporter found some interesting facts you might like to know about.
http://researchwikis.com/Energy_Drinks_Market

It was further broken down into male and female usage:
http://scribd.com/doc/3553606/A-Survey-of-Energy-Drink-Consumption-Patterns-Among-College