Milk vs. water: surprising hydration winner in kids?

This study tested how well three different drinks—strawberry-flavored semi-skimmed milk, a new whey-based drink, and plain water—keep children aged 9 to 11 hydrated. Thirteen healthy kids took part in four morning sessions, drinking each beverage and a smaller amount of water. Researchers measured urine output, blood sugar, stomach emptying, and even mood and thinking skills. The goal was to find the most effective drink for hydration and see if it also helps with focus and appetite.