Save juice boxes and pouches for road trips, and limit fruit juice at home to 4 to 6 ounces day -- it's full of sugar and calories, and kids can get vitamin C from healthier whole fruit (and vegetables too).
Make a small serving go farther by diluting juice with water. Or pop a couple of frozen juice cubes -- each cube holds an ounce -- into flavored seltzer for a fizzy, low-sugar treat.
When you do give juice, opt for OJ: It boasts folate and potassium, and the kids' versions are fortified with calcium and vitamins A and E.