Summertime is so much fun with little ones, but it can also be a dangerous season if we don't consider how to keep our little ones cool and hydrated during extreme heat. Babies and young children have a smaller amount of liquid in their body, so dehydration can progress more quickly than in adults. Additionally, babies and young children can't sweat as well as adults, so they can have a hard time cooling their bodies down once they begin to heat up, putting them at higher risk of overheating.