We built Sponge because we watched people we love suffer from something preventable.

Nathan Katzaroff

Nathan’s grandmother suffered from Alzheimer’s disease. Watching her lose independence and cognitive function drove him to research what preventive health actually looked like in practice. Hydration kept coming up — not as a cure, but as one of the clearest, most controllable inputs to long-term brain health.

As an athlete — he’s completed a marathon and is competing in the OC Triathlon — Nathan experienced firsthand how dramatically proper hydration changes performance and recovery. He built Sponge for people who want the benefits of good hydration but keep forgetting to actually do it.

Christopher Miglio

Christopher’s grandfather suffered from dementia. What struck Christopher was how much hydration affected the day-to-day reality of his grandfather’s condition — on well-hydrated days, his grandfather was more alert, more oriented, more present. Dehydrated days were noticeably worse.

That observation became a conviction: hydration isn’t passive. It has real, measurable effects on how people think and feel. Christopher co-founded Sponge to make consistent hydration something anyone can achieve without relying on memory or willpower.