Extract from the scientific study: 

“The effect of the performance-enhancing  soft drink “headstart” on mental and physical performance” 

Dr V. Höltke, Dr M. Steuer, Dr E. Jacob

Numerous experimental studies have shown that …

In a peer-reviewed scientific study, the effectiveness of “headstart” could be impressively proven. After taking headstart, performance during around three hours of high concentration and stress was measurably better (by up to 12%)!

In a  direct comparison of all study participants, the headstart group achieved better performance  , especially in the last third of the observation period, i.e. with headstart the “highest” (brain) performance could be maintained longer!