'Tis the season for holiday travel. And if you have kids in tow, you know it'll be more of an adventure than a vacation. Doctor Adam Keating with Cleveland Clinic Children's says if your little travelers are grumpy, it's usually because they're tired, hungry, thirsty or over stimulated. Doctor Keating says it's also important for kids to wash their hands before eating and try to avoid touching their faces. Parents can always consider masking kids in crowds to protect them from respiratory viruses too.