Studies conducted by various universities, like Nova South Eastern University in Florida and the University of Edingburgh, suggest that the caffeine content in energy drinks does boost energy and may be the primary stimulator. While the other ingredients are complementary, in that they improve immunity and aid with stress relief, caffeine is the primary performance enhancer.
“Most of the performance-enhancing effects of energy drinks can be linked to their caffeine content.” ~ Stephanie Ballard, the study leader and assistant professor of pharmacy at the Nova South Eastern University, West Palm Beach, Florida.
