Recent findings suggest that sparkling water may be a superior choice over still water for maintaining focus and alertness during extended gaming sessions. As gamers often rely on caffeinated beverages like coffee or energy drinks, which can pose health risks when consumed excessively, researchers from the University of Tsukuba in Japan explored whether sparkling water could serve as a healthier alternative.
The Study
In this investigation, 14 casual gamers participated in two separate three-hour virtual soccer sessions. One session required them to consume still water, while during the other, they were provided with sparkling water.
Results
Measurements taken during the study, including reaction times, pupil size (which can indicate fatigue), physical stress, and subjective feelings of tiredness, indicated that sparkling water helped maintain attention levels and reduce fatigue better than still water.

The researchers noted that “compared to plain water, sparkling water significantly attenuated increases in subjective fatigue, enhanced enjoyment, and preserved executive function, along with preventing pupil constriction.”
They observed no significant differences in heart rate, blood glucose, or salivary cortisol levels between the two conditions.
Underlying Hypothesis
The study is based on the hypothesis that carbonated water may enhance performance in certain cognitive tasks due to the presence of carbon dioxide, which appears to stimulate specific sensory receptors in the mouth, resulting in increased brain activity. While not directly investigated in this study, the indications are that sparkling water might enhance cognitive function during lengthy gaming sessions.
Gamers reported improved alertness and enjoyment while consuming sparkling water, with fewer in-game fouls committed, suggesting greater control over their virtual teams. The researchers documented these insights, stating that sparkling water effectively alleviates both subjective and objective signs of cognitive fatigue during prolonged esports play.
Funding Considerations
It is essential to consider the funding context of this research. It was partially financed by a soft drinks company that produces sparkling water, and two authors are employees of this company. However, the study’s authors assert that the funding did not influence the study’s design, data collection, analysis, or interpretation.
Conclusion
With the findings indicating that sparkling water may support sustained focus during lengthy sessions, gamers might want to consider this alternative for future gaming marathons. More research could reveal even more insights into how sparkling water compares with other beverages like coffee and energy drinks.
Key Takeaways
- Sparkling water may help maintain concentration during long gaming sessions.
- Gamers reported feeling less fatigued and enjoying the experience more with sparkling water.
- The study involved 14 casual gamers over two gaming sessions.
- Measurements showed sparkling water was more effective than still water in reducing fatigue.
- Participants committed fewer in-game fouls while consuming sparkling water.
FAQ
Question
What was the main finding of the study?
The study found that sparkling water helped maintain concentration and reduce fatigue better than still water during gaming sessions.
Question
How many gamers participated in the study?
Fourteen casual gamers took part in the research.
Question
Did the researchers find any health risks associated with sparkling water?
No health risks were reported in relation to sparkling water consumption in this study.
Question
What aspect of the drink might enhance cognitive function?
The carbon dioxide in sparkling water may stimulate sensory receptors that increase brain arousal.