There are 2 types of
carbs; simple
carbs, such as those found
in sodas, things made with white refined
sugar, flour, white rice, and even fruit. The other type of carb is the complex carb (otherwise known as dietary fiber), which is found in whole grains, veggies, seeds, nuts, etc.
The simple carbs are broken down quickly and enter the blood stream as sugar, which if not used, is then stored as fat. Complex carbs/fiber are broken down slowly and keeps you feeling fuller longer.