Let’s start with the obvious: seltzer is water, and water is life. If you struggle to drink the recommended eight glasses a day, seltzer can be your secret weapon.
The carbonation makes it feel more like a treat than a chore. For many, that effervescence is the difference between sipping a boring glass of tap and actually hitting your hydration goals.
One study even found that carbonated water is just as hydrating as still water, despite the bubbles. So go ahead and chug—your kidneys won’t know the difference.