An average 8 in 10 adults consume caffeine each day. The recommended total consumption of caffeine daily is 400mg. The global energy market is considered to be one of the fastest growing segments for soft drinks. More than 50% of these consumers are college students. Of the top selling US energy drink brands, 11 out of 27 of them do not specify the caffeine levels causing the potential for over consumption. Energy drinks consumption has been linked to individuals having impaired cognition, heart problems, and alcohol dependence.