Scientists at Centre College in

Kentucky have done a double-blind experiment to measure the effect of 5-Hour Energy, and it turns out everyone's favorite tiny energy drink might be no more effective than coffee.

The researchers looked at the drink's effect on a specific brain wave, P300, which increases in amplitude when stimulated by caffeine. Perhaps surprisingly, 5-Hour Energy was no better at increasing P300 activity than the caffeine you can get free at your office’s coffee machine.

The study suggests that while you might feel more productive with your heart thrashing around thanks to all those added stimulants like taurine, 5-hour energy is not keeping you more alert.