Caffeine has already been known for its stimulating effects on the human body by ancient civilisations who consumed it from natural sources like tea, coffee, cacao beans & cola nuts. To this day, Caffeine is naturally present in many foodstuffs such as coffee, tea and chocolate.
One of caffeine’s primary sites of action in the human body is the central nervous system where it stimulates cognitive functions.
One can of Red Bull Energy Drink (containing 80mg of caffeine) helps to improve concentration and increase alertness. This was proven by various scientific studies and has also been concluded by the European Food Safety Authority (EFSA) in their evaluation of health claims.