A new study of esports gamers has found that sparkling water could be better than still water if you want to maintain concentration and alertness over long sessions at a desk. To stay in the zone, gamers often turn to caffeine-packed beverages like coffee or energy drinks, which present potential health risks when consumed in large quantities . A team led by researchers from the University of Tsukuba in Japan wanted to see if sparkling water could provide a healthier alternative. On two