Spoiler: they’re both hydrating. Your body doesn’t care if the water is still or sparkly—it just wants H₂O. But there’s a catch. Some studies suggest sparkling water can make you feel fuller because the bubbles stretch your stomach. Great for dieting, but maybe not before a run.
Difference Between Sparkling Water And Still Water | Detroit Chinatown
On the flip side, still water is the gold standard for intense workouts. No gas means faster absorption. Also, if you have a sensitive tummy, too many bubbles can cause bloat. You become a human wind instrument. Not great during a yoga class.
And for teeth? Sparkling water is slightly more acidic than still—but way less than soda. So unless you’re chugging it 24/7, your enamel is fine. Still water remains the safe bet for zero acidity.