Stronger effects of caffeinated beverages on boys than on girls, says a new study.
Published in Behavioural Pharmacology, researchers in the study looked at how consuming caffeine affected children between 12 and 17 years old.
After analyses, boffins found that boys worked significantly longer at a computer game to win a caffeinated soda than girls did.
The study also controlled for factors including regular caffeine consumption, thirst and boredom, reports ABC Science.
Dr Jennifer R Temple, lead researcher and neurobiologist at University of Buffalo, said: "We aren't sure (why boys responded more), but we speculate that it could have to do with circulating hormones and their effect on the metabolism of caffeine."