The difference between feeling right on track and leaving the lunch table feeling like you could eat a whole nother meal is in a word—Fiber! Fiber is the coarse indigestible plant matter that is found in foods like beans, fruits and nuts. It comes in soluble and insoluble forms and it is essentially what contributes that fullness feeling you get after eating.
Why is fiber important? It changes the way your body digests food and how it is absorbed. More fiber means more bulk in your system, heart health and better digestion.
Try out this cool Fiber-o- Meter featured on WebMD. It shows you which foods have the best fiber content: http://www.webmd.com/diet/healthtool-fiber-meter