Interview: How to eat healthy and avoid empty calories

SEATTLE -- Nutritionists say not watching your snacking can pack on the pounds.

If you consume an 600 extra calories in snacks a day, and don't work it off, it can turn into a pound of fat every six days. It takes most people five miles of walking on a treadmill to burn off those calories.

Nutritionist Deborah Enos talked Friday about healthy ways to snack.